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PLOS One logoLink to PLOS One
. 2024 Dec 31;19(12):e0316096. doi: 10.1371/journal.pone.0316096

Impact of the COVID-19 pandemic on violence exposure and alcohol use among adults who drink alcohol

Akua O Gyamerah 1,2,*, Alexandrea E Dunham 3, Janet Ikeda 3, Andy C Canizares 1, Willi McFarland 4, Erin C Wilson 4, Glenn-Milo Santos 2,3
Editor: Claudio Alberto Dávila-Cervantes5
PMCID: PMC11687906  PMID: 39739971

Abstract

The COVID-19 pandemic has exacerbated prevalence of alcohol use and violence, including gender-based violence (GBV); however, little is understood about the pandemic’s impact on the relationship between the two. Data were collected from January 2021-April 2023 with adults who drink alcohol (N = 565) in the San Francisco Bay Area. Questions assessed prevalence of heavy alcohol use (≥4 drinks on one occasion ≥4 times a month) in the past 3 months and violence/GBV exposure before and during the pandemic. Logistic regression examined associations between violence and alcohol use. Overall, participants reported heavy alcohol use (73.7%), strong desire for alcohol (53.3%), ever experiencing violence (71.6%), and GBV (20.5%). During the pandemic, participants reported experiencing violence (26.1%), more violence than usual (13.8%), GBV (8.9%), and drinking more alcohol (43.7%). People who experienced violence during the pandemic had significantly greater odds of reporting heavy alcohol use (OR = 1.76, p = 0.05) and drinking more during the pandemic than usual (OR = 2.04, p<0.01). Those who reported experiencing more violence during the pandemic than usual had significantly greater odds of reporting heavy alcohol use (OR = 2.32, p = 0.04) and drinking more during the pandemic (OR = 2.23, p<0.01). People who experienced GBV during the pandemic reported a significantly stronger desire for alcohol (OR = 2.44; p = 0.02) than those not exposed. Alcohol-related harms increased over the COVID-19 pandemic, including increased violence/GBV, alcohol use, and an elevated desire to use alcohol among those who experienced violence during the pandemic. Future pandemic preparedness efforts must prioritize violence prevention strategies and adapt alcohol harm reduction, recovery, and treatment programs to pandemic conditions.

Introduction

The COVID-19 pandemic has been globally transformative, superseding a health crisis as social effects began to impact daily life through shelter-in-place policies and quarantine periods. In the San Francisco Bay Area (SFBA), there have been 1.96 million recorded cases of COVID-19 and 10,115 recorded deaths since 2020 [1]. The pandemic has impacted employment, increased social isolation, and worsened conditions for those already vulnerable to health and economic disparities [2,3].

One impact of pandemic-related stressors has been an increase in alcohol use, including increased misuse, relapses, and onset of alcohol use disorder (AUD) [4]. Alcohol sales in the U.S. increased by 20% in the first six months of the pandemic (March 2020 to September 2020) in comparison to sales during the same time period in 2019 [5]. Binge drinking sessions increased by 60% compared to pre-pandemic drinking among binge drinkers and by 28% among non-binge drinkers [6]. Among all drinkers, consumption exceeding the Centers for Disease Control and Prevention’s (CDC) drinking guidelines increased by 36% to 38% in the U.S. [7].

Increased alcohol consumption triggered by the pandemic is concerning given the adverse mental and physical health outcomes associated with heavy alcohol use, such as diabetes, sexually transmitted diseases (including HIV), respiratory infections, cancer, depression, cardiovascular diseases, and neuropsychiatric disorders [8]. A cross-sectional study that examined associations between mental health and alcohol use during the pandemic found that those who binge drank during the pandemic had worse mental health outcomes, including higher rates of depression, anxiety, stress, and PTSD in contrast to those who did not binge drink [9]. Other studies have found that heavy alcohol use can worsen the severity of COVID-19 infection [10,11]. Moreover, the number and rate of alcohol-related deaths increased by 25% during the pandemic, outpacing increase in all-cause mortality [12].

In addition to an increase in alcohol use, the pandemic exacerbated the prevalence of violence, including gender-based violence (GBV)—that is, violence targeting a person due to their actual or perceived gender identity or presentation [13–16]. GBV can consist of violence experienced from strangers, the state (i.e., the police, military, etc.), or one’s family, community, or intimate partner (IPV). At the start of the pandemic, preliminary reports indicated that there was a rise in GBV globally [13,17]. Studies have since reported observable increases in GBV in various international contexts [18–22], disproportionately affecting women and gender minorities. For example, in a cross sectional study in Kenya and Burkina Faso, there was a significant increase in GBV rates against women during the pandemic despite already high cases [19]. A review of GBV in various African countries similarly found that the pandemic worsened incidence of domestic violence against women. In Argentina, a study among transgender and non-binary people found that 20.5% of trans women, 27.6% of trans men, and 42.5% of nonbinary participants reported an experience of violence during the pandemic [23]. GBV was also observed to worsen in the United States, with a few national and local studies reporting significant increases in violence experiences, especially IPV, among cis women and gender minorities [24,25].

While the impact of the pandemic on alcohol use and on GBV has been documented, few studies have examined the co-occurrence between the two—an issue of concern given prior research demonstrating a relationship between alcohol use and violence [26]. Previous studies have shown that there is an association between alcohol availability and increases in violence as a result of increased isolation and income loss—two related stressors that were common during the COVID-19 pandemic [27–29]. In the United States, a study using 911 calls in Michigan documented that the strength of the relationship between domestic violence reports and alcohol sales more than doubled since the start of the pandemic [30]. Another U.S. study that examined COVID-19-related stressors and IPV on alcohol use among adults found increased IPV experiences were associated with higher levels of alcohol consumption [31]. While there is growing literature on alcohol use and violence during the pandemic [30–33], there are few studies that specifically look at the relationship between substance use and GBV, rather than just IPV and domestic violence.

The current study thus aimed to examine the relationship between the impact of lifetime exposures of violence (sexual, physical, and verbal), including GBV, on alcohol use and the impact of the COVID-19 pandemic on violence exposure and alcohol use among adults living in the SFBA.

Materials and methods

Study design and setting

The present study was a supplemental study administered during the pre-screening for a randomized control trial testing the efficacy of kudzu extract, an herbal supplement, in reducing alcohol use among adults with alcohol use disorder (AUD) (clinicaltrials.gov #: NCT03709043). We analyzed cross-sectional quantitative pre-screening data on alcohol use, violence experiences, and COVID-19 impact among alcohol-using adults (N = 565). The study was conducted at the San Francisco Department of Public Health in the San Francisco Bay Area (SFBA), which was among the first cities to implement a shelter-in-place ordinance at the start of the COVID-19 pandemic [34].

Eligibility criteria and procedures

Data collection occurred from January 2021 to March 2023 in SFBA. Prospective participants were recruited through street outreach, recruitment flyers, sexual health clinics, needle exchanges, community organizations, bars, websites, and social media. To ensure multiple modes of contact, interested parties could contact our recruitment team by phone or email. To be eligible for this study, participants had to be age 18 years or older, a resident of SFBA, sexually active, and drink alcohol, which was different from the criteria for the clinical trial. Participants were screened by phone by trained study recruiters. Participants were briefed on study procedures and their rights as study participants and provided informed consent before proceeding to the screening questions. All participants provided verbal informed consent.

Ethical approval

Study procedures were approved by the University of California, San Francisco Committee on Human Research (18–25073).

Measures

Demographic variables

Questions assessed sociodemographic background (age, gender, race/ethnicity) and HIV status. Race and ethnicity were defined using the U.S. government definitions [35] and were categorized as Non-Hispanic/Latino Black, Asian/Hawaiian/Pacific Islander, and Mixed/Other, White, and Latino/Hispanic. We combined non-Hispanic/Latino Native American, mixed, and other racial categories under “Other”. The gender categories were cis male, cis female, queer/non-binary/other, and trans female, and trans male.

Independent variables

Five types of violence exposures were assessed for their impact on alcohol use before and during the pandemic: 1) violence ever (“In your lifetime, have you ever been verbally threatened, slapped, punched, kicked, beaten up, or otherwise verbally, physically, or sexually hurt by someone, whether a romantic partner, friend, family, or stranger?”); 2) GBV ever (Do you think any of these [lifetime] experiences of violence happened because of your gender identity or presentation?), 3) violence during the pandemic (“During COVID-19 shelter-in-place order, have you ever been verbally threatened, slapped, punched, kicked, beaten up, or otherwise verbally, physically, or sexually hurt by someone, whether a romantic partner, friend, family, or stranger?”); 4) more violence during the pandemic (assessed as yes/no to: “During the COVID-19 pandemic, I have experienced more verbal, physical, or sexual violence than I usually do”); and 5) GBV during pandemic (assessed as yes/no to: “Do you think any of these [COVID-19] experiences of violence happened because of your gender identity or presentation?”).

Dependent variables

The outcome variables of interest were: 1) heavy alcohol use (defined as ≥ 4 drinks on one occasion ≥ 4 times a month) in the previous 3 months (assessed as yes/no); 2) strong desire for alcohol (assessed as yes/no to: “In the last 30 days, have you had a strong desire to drink that made it difficult to think about anything else and that often resulted in the onset of drinking?”); and 3) drink more alcohol during the COVID-19 pandemic and changes related to it like shelter in place orders, changes to social life, employment, etc. (assessed as yes/no). Our definition of heavy alcohol use was derived from the Substance Abuse and Mental Health Services Administration’s (SAMHSA) definition of heavy alcohol use as binge drinking (5 or more alcoholic drinks for males or 4 or more alcoholic drinks for females on the same occasion) on 5 or more days in the past month [36].

Data analysis

Data analysis was conducted using Stata 17 [37]. Bivariate logistic regression analyses examined bivariate associations between violence exposures and alcohol use outcomes. In multivariate logistic analysis, we examined the associations between alcohol use and violence exposures, controlling for gender, age, race and ethnicity, and HIV status. Statistical significance was set at P-value ≤0.05.

Results

Participant characteristics

There was a total of 565 participants in the present study. Mean age was 41.6 years (standard deviation [SD] = 13.3) (Table 1). By gender identity, 49.7% identified as cis men, 43.5% as cis women, 4.1% as queer/non-binary, 1.8% as trans women, and 0.9% as trans men. A plurality identified as White (49.6%), followed by Latino/Hispanic (23.0%), Black (11.6%), Asian/Hawaiian/Pacific Islander (9.1%), and other (Native American, mixed, and other).

Table 1. Demographics, alcohol use, and violence exposure among SFBA adults (N = 565).

Variable N (%)*
Age Mean = 41.6 years; SD = 13.3
Gender
Cis man 280 (49.7)
Cis woman 245 (43.5)
Queer/non-binary 23 (4.1)
Trans woman 10 (1.8)
Trans man 5 (0.9)
Race/Ethnicity
Black** 64 (11.6)
Latino/Hispanic 127 (23.0)
Asian/Hawaiian/Pacific Islander** 50 (9.1)
Mixed/Other** 37 (6.7)
White** 274 (49.6)
HIV status
Not living with HIV 495 (89.8)
Living with HIV 56 (10.2)
Violence experiences
Violence ever 391 (72.5)
Violence during pandemic 152 (27.9)
More violence during pandemic 86 (15.6)
GBV ever (n = 515) 119 (23.1)
GBV during pandemic 60 (10.7)
Alcohol use
Heavy alcohol use (≥4 drinks on one occasion ≥4 times a month in past 3 months)
409 (73.7)
Strong desire for alcohol ≤ 30 days 289 (52.2)
Alcohol use during COVID-19 (n = 509)
Drank More 240 (47.2)
Drank Less 213 (41.8)
Drank Same 56 (11.0)

*Percentages expressed of those with non-missing responses, categories may not add up to total.

**Non-Hispanic/Latino.

Alcohol use

Overall, 73.7% of participants reported heavy alcohol use (≥4 drinks on one occasion ≥4 times a month) and 52.2% reported a strong desire for alcohol in the past month. Close to half of participants (47.2%) reported drinking more alcohol during the pandemic compared to before, 41.8% reported drinking less alcohol, and a minority (11.0%) reported drinking the same amount (Table 1).

Violence exposure before and during COVID-19 pandemic

Overall, 72.5% of participants reported experiencing violence and 23.1% reported GBV in their lifetime (Table 1). Over one quarter (27.9%) of participants reported experiencing sexual, physical, or verbal violence during the pandemic and 15.6% reported experiencing more violence than usual during the pandemic. Additionally, 10.7% reported experiencing GBV during the pandemic.

Bivariate associations between violence and alcohol use

Table 2 reports bivariate associations of violence exposure and alcohol use. Participants who reported a lifetime experience of violence had greater odds of reporting a strong desire for alcohol in the past month (OR = 1.67; 95% CI: 1.1–2.4; p = 0.01). Similarly, those who reported a lifetime experience of GBV had greater odds of reporting a strong desire for alcohol in the past month (OR = 1.53; 95% CI: 1.0–2.3; p = 0.04).

Table 2. Bivariate associations of violence exposure and alcohol use (N = 565).

Violence exposure Heavy alcohol use OR [95% CI] P-value Strong desire for alcohol
OR [95% CI]
P-value Drink more during pandemic
OR [95% CI]
P-value
Violence ever 1.30 [0.9–2.0] 0.22 1.67 [1.1–2.4] *0.01 1.14 [0.8–1.7] 0.49
GBV ever 0.88 [0.6–1.4] 0.58 1.53 [1.0–2.3] *0.04 1.19 [0.8–1.8] 0.42
Violence during pandemic 1.79 [1.1–2.9] *0.01 2.51 [1.7–3.7] *<0.001 1.63 [1.1–2.4] *0.01
More violence during pandemic 2.07 [1.1–3.8] *0.02 2.19 [1.3–3.6] *0.002 2.02 [1.2–3.3] *0.004
GBV during pandemic 0.75 [0.4–1.4] 0.35 3.02 [1.6–5.6] *<0.001 1.71 [0.98–3.0] 0.06

*P-value <0.05.

Participants who reported experiencing violence during the COVID-19 pandemic had greater odds of reporting heavy alcohol use (OR = 1.79, 95% CI: 1.1–2.9; p = 0.01) in the past month, a strong desire for alcohol (OR = 2.51; 95% CI: 1.7–3.7; p<0.001) in past month, and drinking more during the pandemic (OR = 1.63, 95% CI: 1.1–2.4; p = 0.01).

Participants who reported experiencing more violence during the pandemic compared to before had greater odds of reporting heavy alcohol use (OR = 2.07, 95% CI: 1.1–3.8; p = 0.02), a strong desire for alcohol (OR = 2.19; 95% CI: 1.3–3.6; p<0.01) in past month and drinking more during the pandemic (OR = 2.02, 95% CI: 1.2–3.3; p<0.01).

Participants who experienced GBV during the pandemic reported a stronger desire for alcohol (OR = 3.02; 95% CI: 1.6–5.6; p<0.001).

Multivariate associations between violence and alcohol use

In multivariate models that adjusted for gender, age, race/ethnicity, and HIV status, the significant associations between violence exposure and alcohol remained significant, except for the association between lifetime experience of GBV and strong desire for alcohol in the past month (see Table 3).

Table 3. Multivariate associations of violence exposure and alcohol use (N = 565).

Violence exposurea Heavy alcohol use AOR [95% CI] P-value Strong desire for alcohol
AOR [95% CI]
P-value Drink more during pandemic
AOR [95% CI]
P-value
Violence ever 1.3 [0.8–2.0] 0.27 1.59 [1.1–2.4] *0.03 1.13 [0.7–1.7] 0.55
GBV ever 0.85 [0.5–1.4] 0.51 1.33 [0.9–2.1] 0.29 1.12 [0.7–1.8] 0.62
Violence during pandemic 1.84 [1.1–3.0] *0.01 2.54 [1.7–3.8] *<0.01 1.54 [1.0–2.3] *0.04
More violence during pandemic 2.20[1.2–4.1] *0.01 2.22 [1.3–3.7] *0.002 2.08 [1.3–3.5] *0.005
GBV during pandemic 0.71 [0.4–1.3] 0.28 2.89 [1.5–5.4] *0.001 1.60 [0.9–2.9] 0.13

aEach model controls for gender, age, race/ethnicity, and HIV status |

*P-value <0.05.

Discussion

Our study examined the impact of violence exposure (verbal, physical, and sexual) before and during the COVID-19 pandemic on alcohol use among adults who drink alcohol. Overall, we found that alcohol-using adults self-reported an increase in violence exposure and alcohol use during the COVID-19 pandemic. Particularly, there were reports of increased violence experiences, gender-based violence, and alcohol use among high proportions of participants. We also found a significant association between violence exposure, including GBV, and elevated alcohol desire and use, in lifetime and during the pandemic. Findings suggest that there is a positive relationship between violence exposure, alcohol use, and the COVID-19 pandemic in which the pandemic compounded the relationship between violence and alcohol use.

Nearly three-fourths of people in our study (72.5%) had a lifetime exposure to verbal, physical, and/or sexual violence, which is higher than comparable measures of lifetime exposure of intimate partner, sexual, and psychological violence in an international study [38]. Generally, it was difficult to find comparable national statistics on lifetime exposure to violence due to a lack of standardization of how lifetime experiences of violence is measured—an issue that other researchers have identified [38]. The closest national estimate of lifetime violence exposure available—an estimate of any exposure to sexual violence, physical violence, and/or stalking by an intimate partner—was 47.3% for women and 44.2% for men [39]. A surveillance study in the SFBA reported that 15.1% of adults surveyed ever experienced physical or sexual violence specifically from an intimate partner [40]. The high percentage of lifetime violence exposure in our study is likely because our estimate combined verbal, physical, and sexual violence in our definition of violence, and perpetrators were not limited to intimate partners. Our study also found that about one-fourth of participants reported experiencing GBV, an estimate that is lower than the prevalence of IPV (34.9%) among women in California. This estimate of lifetime GBV exposure is also lower than an estimate of lifetime violence exposure among trans women (52%) in SFBA due to their gender identity [41]. Our lower GBV estimate is likely because our sample includes cis-gender men.

In terms of alcohol use, three-quarters of people reported heavy alcohol use (≥4 drinks on one occasion ≥4 times a month) in the previous three months and about half reported a strong desire for alcohol in the previous month. Our estimates of heavy alcohol use are higher than estimates of heavy alcohol use (6.4%) and binge drinking (23.3%) in the previous month among adults in a 2021 national surveillance study [42]. Our estimates are likely higher than alcohol consumption rates among the general population because the parent study population was people interested in enrolling into an alcohol treatment clinical trial.

The high prevalence of violence experiences in our study suggests that adults who use alcohol and/or are seeking alcohol treatment may have a higher exposure to violence. This was corroborated by our finding that there were significant associations between violence exposure and alcohol use and desire. Specifically, we found that participants who reported a lifetime experience of violence had greater odds of reporting a strong desire for alcohol in the past month. Additionally, those who reported a lifetime experience of GBV had greater odds of reporting a strong desire for alcohol in the past month. These findings reflect those of extant literature on domestic violence and IPV that violence exposure predicts alcohol use [43–45] and that alcohol is used by survivors of violence to cope with trauma symptoms [46,47]. Future longitudinal and qualitative studies are needed to examine the temporal relationship between violence experiences and the context of alcohol use.

In terms of violence exposure and alcohol use during the COVD-19 pandemic, there were increases reported for both, which reflect findings from other studies on alcohol use [7,48] and domestic violence [14] during the pandemic. Specifically, we found that about half of participants reported drinking more alcohol than prior to the pandemic, which is higher than national estimates from a SAMHSA surveillance study of adults who use alcohol (13.4%) in the U.S. [49]. The increase in alcohol use is particularly concerning as studies have found that heavy alcohol use not only worsens mental health outcomes under pandemic conditions [9], but also the severity of COVID-19 infection [10,11].

Additionally, one-third of people surveyed reported experiencing violence during the COVID-19 pandemic and 15.6% reported more violence exposure during the pandemic than usual. A study of California residents two weeks after the shelter-in-place ordinance reported slightly lower violence estimates, with IPV at 15.5% and sexual violence at 10.1% [50]. While some forms of IPV and sexual violence can be categorized as GBV, at the time of our writing, there were no known estimates in the SFBA or nationally of exposure to violence due to one’s gender identity or presentation specifically during the pandemic. However, studies elsewhere reported increases in GBV and IPV [14,19,51,52]. The high prevalence of violence during the pandemic (27.9%) in our study, along with the finding that many of our participants experienced more violence than usual (15.6%), is likely due to an increase in socioeconomic stressors caused by the COVID-19 pandemic and its related changes. As a study on the association between IPV and economic insecurity during the COVID-19 pandemic among women and transgender people in the U.S. found, IPV victimization was worsened by material factors like housing and healthcare insecurity [25]. More generally, studies have found that pandemics and other crises cause or exacerbate social stressors such as job loss and reduced income, which have been found to be drivers of violence [52,53].

An important finding in our study is that there were significant associations between violence exposure and alcohol use during the COVID-19 pandemic. Participants who reported experiencing any violence and those who reported experiencing more violence than usual during the pandemic had greater odds of reporting heavy alcohol use, a strong desire for alcohol in the past month, and of drinking more alcohol during the pandemic. In addition, participants who reported experiencing GBV during the pandemic had greater odds of reporting a strong desire for alcohol in the past month. These findings support reports from other studies in the U.S. and internationally that show a positive association between violence and alcohol use during the pandemic, such as a strengthened relationship between alcohol use at home and domestic violence and of increased IPV and higher alcohol use [30–33]. The linkages between violence exposure and alcohol consumption may potentially be explained by exposure to stressful events which prior studies have linked to increased alcohol use and alcohol use disorders, including COVID-19 specific studies [54–58]. It’s plausible that participants in this study may report greater drinking because of the stress associated with the violence they experienced or associated with the pandemic-specific changes. Additional studies may be needed to better understand the linkages we observed.

Limitations

Our study has limitations. This was a cross-sectional analysis; therefore, we cannot determine whether there’s a causal relationship between violence exposure and alcohol use, nor can we ascertain the temporal sequence between the two behaviors. It is also possible that there were potential confounders that we did not adjust for such as job loss or reduced income, which previous studies on COVID-19’s impact have found to be associated with alcohol use [6,57,58]. We did not adjust for these potential confounders because our study was cross-sectional and we are not able to rule out whether our measures for these conditions occurred after our exposure and may thereby be part of the causal pathway between our exposure and our outcome. Thus, adjusting for them would potentially introduce collider stratification bias, as well as incorrectly treat a mediator as a confounder [59–61]. Future longitudinal studies with repeated measures might be needed to better account for the role of these potential confounders and confirm the associations we observed. Additionally, our study did not measure participants’ alcohol use prior to the pandemic. Hence, we are unable to examine prior study findings that have documented that one’s level of alcohol use prior to the COVID-19 pandemic is associated with the volume and frequency of alcohol consumption during the pandemic [62,63]. However, we measured whether participants felt that they drank more during the COVID-19 pandemic. Our analysis found a positive association between being exposed both to violence during the pandemic and more violence during the pandemic and reporting drinking more during the pandemic. Another study limitation is that data was collected in the SFBA and may not be generalizable to other cities. As mentioned, our study was conducted among adults who drink alcohol and were being screened for a clinical trial for AUD treatment. Therefore, the estimates of alcohol use and of violence exposure in our study may be higher than in the general population. We also did not ask participants to specify the type of violence they experienced (i.e., verbal, physical, or sexual); thus, our estimates of violence experienced may be higher than estimates for specific forms of violence. Finally, since the study was nested under a clinical trial, recruitment spanned over two years, which may introduce chronological bias. Relatedly, data was self-reported and consists of responses to questions that asked participants to recollect experiences that occurred in the past (e.g., history of GBV; experiences during shelter-in-place ordinances). Thus, participant responses may have been prone to social desirability or recall bias.

Recommendations

Despite these limitations, our study contributes important findings, including pandemic specific data, indicating a positive correlation between violence exposure, GBV, and alcohol use and desire to drink. Drawing on these findings, it is important that social services, both by government and non-governmental organizations, are prepared to provide targeted outreach to support people who are at risk of or experience GBV, as well as those facing increased incidents or severity of violence during pandemics. When appropriate, these services should also screen individuals for AUD with their consent and link them to treatment. Particularly, future pandemic preparedness efforts must develop and incorporate violence prevention strategies, with a focus on the most vulnerable populations, such as women, gender minorities, and people living with substance use disorders. Internationally, about 52 countries incorporated strategies to prevent violence against women and girls into their COVID-19 plans after the first year of the pandemic in light of surging GBV; the U.S. however, had not adopted such a plan [64]. Recommendations like those released by the United Nations Women [17] at the start of the pandemic and review articles highlighting exemplar responses to surging violence and advising an increase in funding, a strengthening of services and organizational capacity, centering marginalized genders in policies, providing social, economic, and virtual support to survivors, and collecting gender disaggregated data to monitor violence, are instructive on future preparedness and responses [16,20,53]. In addition, drawing on their study in Puerto Rico, Gaba and colleagues [20] have suggested that governments use existing global guidance and psychological interventions to address surges of GBV during pandemics—a recommendation that proved effective in addressing surging GBV in Puerto Rico during the COVID-19. Increasing psychological and mental health interventions may mitigate the stress and trauma from violence, and in turn reduce heavy alcohol consumption among those who experienced violence.

Across the U.S. and in the SFBA specifically, organizations that provide services to survivors of domestic, intimate partner, and GBV should allocate resources towards services that address pandemic-related needs of their clients. Such funds can be used to support services such as safe shelter, therapy, and substance use counseling and treatment that can help mitigate the risk of violence and/or substance use to cope with violence trauma. By the same token, state and federal government should provide funds to support efforts to support violence survivors and people with substance use disorders. As domestic violence and GBV advocates and activists in California have pointed out, government funding to support survivors and the organizations that service them is inadequate and are disproportionately allocated to shelter-based programs, which only serve a fraction of survivors, while non-shelter-based programs and culturally responsive programs for underserved communities are underfunded [65]. Additionally, there is no state funding for violence prevention programs, which would help address the issue at its root. Alcohol harm reduction, recovery, and treatment programs should also be adapted to pandemic conditions and made available for those who report violence. Evidence also suggest that jointly addressing both AUD and traumatic stressful events are possible and efficacious [66]. Likewise, given the link between socioeconomic and psychosocial stressors and violence and alcohol use, social programs that relieve these stressors should be implemented to prevent alcohol use disorder and violence.

Conclusion

Our study findings contribute data on how COVID-19 pandemic conditions exacerbated social issues, particularly alcohol use and violence exposure and further document the impact of violence on alcohol use. The study also notably contributes to an estimate of GBV exposure during the pandemic, which other studies have measured using the proxy measures of domestic and intimate partner violence. Future efforts in pandemic preparedness must develop and incorporate violence prevention strategies and adapt alcohol harm reduction, recovery, and treatment programs to pandemic conditions. Additionally, more research, including longitudinal studies, should be conducted to determine the impact of specific pandemic stressors on violence and alcohol use.

Acknowledgments

We would like to express our sincere gratitude to study staff and participants for their time and contributions to the study.

Data Availability

The study data has been made available and can be found at the following repository: http://datadryad.org/stash/share/RoK9itq9yFqVio-7R7M5hqRIL87rsMJ8D-bEgjjax5M.

Funding Statement

This research was supported by funds from a National Institute of Alcohol Abuse and Alcoholism (NIAAA) Diversity Supplement (3R01AA025930-03S1; parent study: R01AA025930-01A1; PI: Glenn-Milo Santos, PhD). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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Decision Letter 0

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16 Oct 2024

PONE-D-24-21093Impact of the COVID-19 pandemic on violence exposure and alcohol use among adults who drink alcoholPLOS ONE

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Reviewer #1: The analysis presented in the paper adds significant insights on the linkage between violence and alcohol consumption during the COVID-19 pandemic in a selective urban population. The study, however, has significant limitations mainly related to the unmeasured confounders, which shall me discussed in the discussion section and mentioned in the study limitations subsection. Violence is only one among several important causes of pandemic associated distress.

The fact is that violence is just one of several important causes of pandemic-related distress that may have influenced alcohol consumption. Quite a lot of research works has already been published in the scientific literature that show the relationship between other causes of distress during the pandemic that influenced alcohol consumption. They included job loss during the pandemic, decreased income during the pandemic, and the perception of the pandemic itself as a stressful event.

Also, according to the published literature, alcohol consumption and levels of violence were influenced by the strength of the restrictions imposed to reduce spread of COVID-19 and the severity of self-isolation controls during the pandemic. In the discussion, authors are encouraged to provide some details about the severity of restrictions during the pandemic in the community surveyed. The authors should also mention that the study did not ask questions about the respondent’s own perception of the severity of the imposed restrictions on social and everyday life, which, according to the literature, may affect both the level of violence and the level of alcohol consumption.

Several studies reported association between the levels of alcohol consumption before pandemic and increase in alcohol consumption during the pandemic.

For example, one study conducted among users of social media demonstrated a positive association between the increase in the frequency of alcohol consumption and severe restrictions in everyday private life (OR: 3.127; 95% CI: 1.011–9.675), and severe negative professional or financial consequences due to the spread of SARS-CoV-2 (OR: 2.247; 95% CI: 1.131–4.465). In this study, the odds of an increase in the frequency of heavy episodic drinking were more than twice higher (OR: 2.329; 95% CI: 1.001–5.428) among those who had experienced severe negative consequences of the pandemic to their professional and financial situation. Higher typical frequency and usual consumption (volume) of alcohol on a typical drinking occasion and higher typical frequency of heavy episodic drinking before the pandemic were positively significantly associated with the increase in alcohol consumption during the pandemic. (Reference: Gil AU, Demin AK. Factors associated with increase in alcohol consumption during first months of COVID-19 pandemic among online social media users in Russia. Bulletin of Russian State Medical University. 2021. 6:(118-128). DOI 10.24075/brsmu.2021.064.). Authors shall also discuss in the discussion section the literature dedicated to the polarization of alcohol consumption during the pandemic where it was found that heavy drinkers tend to increase consumption of alcohol during the pandemic, while those drinking less tend to increase alcohol consumption less or to decrease their alcohol consumption. Initial (before pandemic) level of alcohol consumption (frequency, one-time volume of drinking, frequency of heavy episodic drinking) is an important unmeasured confounder in analysis presented in the submitted paper.

Among published works on the mentioned above unmeasured confounders, the following are recommended for discussion in the discussion section of the paper:

Rossow I, Bartak M, Bloomfield K, et al. Changes in Alcohol Consumption during the COVID-19 Pandemic Are Dependent on Initial Consumption Level: Findings from Eight European Countries. Int J Environ Res Public Health. 2021;18(19):10547.

Changes in self-reported alcohol consumption at high and low consumption in the wake of the COVID-19 pandemic: A test of the polarization hypothesis

Alexander Tran, et al. https://www.medrxiv.org/content/10.1101/2024.07.31.24311291v1

Kilian, C., Rehm, J., Allebeck, P., Braddick, F., Gual, A., Barták, M., . . . O'Donnell, A. (2021). Alcohol

consumption during the COVID-19 pandemic in Europe: a large-scale cross-sectional study in 21

countries. Addiction, 116(12), 3369-3380.

Gil AU, Demin AK. Factors associated with increase in alcohol consumption during first months of COVID-19 pandemic among online social media users in Russia. Bulletin of Russian State Medical University. 2021. 6:(118-128). DOI 10.24075/brsmu.2021.064. https://cyberleninka.ru/article/n/factors-associated-with-increase-in-alcohol-consumption-during-first-months-of-covid-19-pandemic-among-online-social-media-users-in/viewer

Gil A., et al. Changes in alcohol consumption in the Russian Federation during the first months of the COVID-19 pandemic. https://cyberleninka.ru/article/n/izmeneniya-osobennostey-potrebleniya-alkogolya-v-rossiyskoy-federatsii-v-pervye-mesyatsy-pandemii-covid-19/viewer

and other studies available in the reference lists of indicated above publications.

Once, the issue of unmeasured confounders is thoroughly discussed in the paper, the revised manuscript can be considered for publication.

Reviewer #2: Thank you for the opportunity to review this article examining the association between violence (and GBV) and alcohol use during the COVID-19 pandemic in the San Francisco Bay Area. The article is well written and provides important insight into this under-researched topic. Building on the findings, the authors also make strong recommendations relevant to this discipline and well-placed within the context of previous literature.

I am of the opinion that this article should be accepted for publication, with only minor revisions required to provide additional clarity for the reader.

Minor revisions:

1. Page 4, Introduction: "Alcohol purchases increased by 54% in the first week of shelter-in-place orders in the US (5)." This seems to reference a journal article that referenced this statistic in the introduction and not the source material. Please ensure all citations cite the appropriate reference and original source material for the reader. Please also provide additional information on what the 54% increase in sales is being compared to (e.g. the previous year) and if the data is based on sales or self-reported purchasing.

2. Page 6, Introduction: "In the United States, a study using 911 calls in Michigan documented a relationship between domestic violence reports and alcohol use (30)" please include a brief description of the nature of the relationship/association.

3. Page 6, Introduction: The first sentence in the aims paragraph took a few reads. Please revise for clarity. Perhaps consider splitting over two sentences, and/or utilise additional commas.

4. Methods and Materials: Please advise how interested participants responded to the recruitment drive (e.g. did they have to call, text, email etc). Would the required method of responding to the recruitment advertisements have affected who responded?

5. Methods and Materials: Please include whether you have followed any reporting guidelines or checklists. If not, please consider applying one like STROBE and ensure you have included all relevant information for reporting. e.g. was there any missing data? How was it managed?

6. Page 10, results: "Nearly one-third (27.9%) of participants" this is closer to a quarter, a third could be considered overstating the results. Consider revising two 'over a quarter' or something similar.

7. Page 12, Discussion: "Overall, we found that the COVID-19 pandemic increased violence exposure and alcohol use among alcohol-using adults." consider revising to more accurately reflect the findings, e.g. "...alcohol-using adults self-reported an increase in violence exposure and alcohol use during the covid-19 pandemic"

8. Discussion: Please consider swapping the order of paragraphs 2 and 3 of the discussion so it flows more naturally from discussing why the rates of violence identified in your study are higher than that of the general population, and that this high prevalence of alcohol use is likely related to the population you are looking at being adults who use alcohol and/or seeking alcohol treatment. As it is written now, it felt like this was an overlooked point in paragraph 2.

Given the length of the discussion, please also consider the use of subheadings if this falls within journal guidelines - perhaps a section for covid-related findings.

9. Page 14, Discussion: "half of participants reported drinking more alcohol than prior to the pandemic, which is higher than national estimates from the same surveillance study of adults who use alcohol (13.4%) in the U.S. (49)." unclear what is meant by 'the same surveillance study' here, please revise to clarify

10. Page 15, Discussion: "The high prevalence of violence during the pandemic in our study along with the finding that many experienced"; please revise to something like 'many of our participants' or something similar for clarity. It would also be beneficial to include the percentage in brackets here to save the reader having to refer back.

11. Page 16, recommendations: "be prepared to provide targeted outreach to support people who are at risk of or experience GBV and elevated violence" please add more clarity here for if you mean people who have an elevated risk of violence and GVB, or describe what you mean by 'elevated violence'.

12. Please also advise when the shelter in place order(s) for the SFBA ceased in comparison to when the recruitment drive stopped, and include any commentary on if you think this may have affected the results.

Minor typographical or grammar suggestions:

- Page 2, Abstract, 6th line from bottom: replace 'thank' with 'than'

- Pandemic and epidemic have been used seemingly interchangeably. Advise all be revised to pandemic if referring to COVID-19, or clearly include why epidemic is being used.

- Page 5, Introduction: "GBV can consist of violence experienced from strangers, that state (i.e., the police, military, etc.)," revise to 'the' state

- Page 5+6, Introduction: IPV acronym introduced twice. Suggest it instead be introduced in sentence "with a few national and local studies reporting significant increases in violence experiences, especially IPV, among cis women and gender minorities" and remove from other instances

- Page 5, Introduction: double opening bracket on reference 19

- Page 5, Introduction: Full stop/period missing from sentence ending "similarly found that the pandemic worsened incidence of domestic violence against women"

- Page 5, Introduction: In sentence following the above, revise tense for "reporting"

- Page 14, Discussion: "While some forms of IPV and sexual violence can be categorized at GBV"; 'as' instead of 'at'

- Page 16, Limitations: Please revise the fourth sentence in this paragraph

**********

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Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #1: Yes: Artyom Gil

Reviewer #2: No

**********

[NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.]

While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org. Please note that Supporting Information files do not need this step.

PLoS One. 2024 Dec 31;19(12):e0316096. doi: 10.1371/journal.pone.0316096.r002

Author response to Decision Letter 0


3 Dec 2024

Dear Dr. Dávila-Cervantes,

Thank you for the opportunity to revise and resubmit our manuscript. We have given careful consideration to all the issues raised by reviewers and have revised our manuscript accordingly. Below is a point-by-point clarification and explanation of revisions made in response to the reviewers. We believe our revision address all concerns raised and is suitable to publication now. Our sincere gratitude to you and our manuscript reviewers for the insightful feedback.

Sincerely,

Manuscript authors

Reviewer comments Authors’ responses

Journal requirements

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https://journals.plos.org/plosone/s/file?id=wjVg/PLOSOne_formatting_sample_main_body.pdf

https://journals.plos.org/plosone/s/file?id=ba62/PLOSOne_formatting_sample_title_authors_affiliations.pdf

Response: Thank you for this suggestion. We have reviewed the journal requirements and ensured that our manuscript meets all of PLOS ONE’s style requirements.

2. Thank you for stating the following financial disclosure: "This research was supported by funds from a National Institute of Alcohol Abuse and Alcoholism (NIAAA) Diversity Supplement (3R01AA025930-03S1; parent study: R01AA025930-01A1; PI: Glenn-Milo Santos, PhD)."

Please state what role the funders took in the study. If the funders had no role, please state: "The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript."

Response: Thank you for flagging this. We have added the following statement to our financial disclosure on the second page of our cover letter.

"The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript."

3. Thank you for uploading your study's underlying data set. Unfortunately, the repository you have noted in your Data Availability statement does not qualify as an acceptable data repository according to PLOS's standards.

At this time, please upload the minimal data set necessary to replicate your study's findings to a stable, public repository (such as figshare or Dryad) and provide us with the relevant URLs, DOIs, or accession numbers that may be used to access these data. For a list of recommended repositories and additional information on PLOS standards for data deposition, please see https://journals.plos.org/plosone/s/recommended-repositories.

Response: We apologize for sharing the wrong repository link. We have updated the link on the submission form for your reference. We have also posted it below.

http://datadryad.org/stash/share/RoK9itq9yFqVio-7R7M5hqRIL87rsMJ8D-bEgjjax5M

4. Your ethics statement should only appear in the Methods section of your manuscript. If your ethics statement is written in any section besides the Methods, please move it to the Methods section and delete it from any other section. Please ensure that your ethics statement is included in your manuscript, as the ethics statement entered into the online submission form will not be published alongside your manuscript.

Response: Thank you for the correction. We have removed all other references to the ethics statement and have left only one reference to it in the Methods section.

5. Please review your reference list to ensure that it is complete and correct. If you have cited papers that have been retracted, please include the rationale for doing so in the manuscript text, or remove these references and replace them with relevant current references. Any changes to the reference list should be mentioned in the rebuttal letter that accompanies your revised manuscript. If you need to cite a retracted article, indicate the article’s retracted status in the References list and also include a citation and full reference for the retraction notice.

Response: We have reviewed our reference list to ensure it is complete. We have also added six more references and removed one reference in response to reviewer comments:

Removed reference:

5. Pollard MS, Tucker JS, Green HDJ. Changes in Adult Alcohol Use and Consequences During the COVID-19 Pandemic in the US. JAMA Netw Open. 2020 Sep 1;3(9):e2022942.

Added references:

5. Castaldelli-Maia JM, Segura LE, Martins SS. The concerning increasing trend of alcohol beverage sales in the U.S. during the COVID-19 pandemic. Alcohol Fayettev N. 2021 Nov;96:37–42.

57. Acuff SF, Strickland JC, Tucker JA, Murphy JG. Changes in alcohol use during COVID-19 and associations with contextual and individual difference variables: A systematic review and meta-analysis. Psychol Addict Behav. 2022 Feb;36(1):1–19.

58. Weerakoon SM, Jetelina KK, Knell G, Messiah SE. COVID-19 related employment change is associated with increased alcohol consumption during the pandemic. Am J Drug Alcohol Abuse. 2021 Nov 2;47(6):730–6.

59. Groenwold RHH, Palmer TM, Tilling K. To Adjust or Not to Adjust? When a “Confounder” Is Only Measured After Exposure. Epidemiol Camb Mass. 2021 Mar 1;32(2):194–201.

60. Greenland S. Quantifying biases in causal models: classical confounding vs collider-stratification bias. Epidemiol Camb Mass. 2003 May;14(3):300–6.

61. Ananth CV, Schisterman EF. Confounding, Causality and Confusion: The Role of Intermediate Variables in Interpreting Observational Studies in Obstetrics. Am J Obstet Gynecol. 2017 Aug;217(2):167–75.

62. Gil AU, Demin AK. Factors associated with increase in alcohol consumption during first months of COVID‑19 pandemic among online social media users in Russia. Bull Russ State Med Univ. 2021;(6):118–28.

63. Rossow I, Bartak M, Bloomfield K, Braddick F, Bye EK, Kilian C, et al. Changes in Alcohol Consumption during the COVID-19 Pandemic Are Dependent on Initial Consumption Level: Findings from Eight European Countries. Int J Environ Res Public Health. 2021 Oct 8;18(19):10547.

6. Pandemic and epidemic have been used seemingly interchangeably. Advise all be revised to pandemic if referring to COVID-19, or clearly include why epidemic is being used. Thank you for this note. We have taken your advice to revise “epidemic” to “pandemic” in order to be consistent throughout the paper.

Response to Reviewer 1 Comments

7. The analysis presented in the paper adds significant insights on the linkage between violence and alcohol consumption during the COVID-19 pandemic in a selective urban population. The study, however, has significant limitations mainly related to the unmeasured confounders, which shall me discussed in the discussion section and mentioned in the study limitations subsection. Violence is only one among several important causes of pandemic associated distress.

The fact is that violence is just one of several important causes of pandemic-related distress that may have influenced alcohol consumption. Quite a lot of research works has already been published in the scientific literature that show the relationship between other causes of distress during the pandemic that influenced alcohol consumption. They included job loss during the pandemic, decreased income during the pandemic, and the perception of the pandemic itself as a stressful event.

Also, according to the published literature, alcohol consumption and levels of violence were influenced by the strength of the restrictions imposed to reduce spread of COVID-19 and the severity of self-isolation controls during the pandemic. In the discussion, authors are encouraged to provide some details about the severity of restrictions during the pandemic in the community surveyed.

The authors should also mention that the study did not ask questions about the respondent’s own perception of the severity of the imposed restrictions on social and everyday life, which, according to the literature, may affect both the level of violence and the level of alcohol consumption.

Several studies reported association between the levels of alcohol consumption before pandemic and increase in alcohol consumption during the pandemic.

Higher typical frequency and usual consumption (volume) of alcohol on a typical drinking occasion and higher typical frequency of heavy episodic drinking before the pandemic were positively significantly associated with the increase in alcohol consumption during the pandemic. (Reference: Gil AU, Demin AK. Factors associated with increase in alcohol consumption during first months of COVID-19 pandemic among online social media users in Russia. Bulletin of Russian State Medical University. 2021. 6:(118-128). DOI 10.24075/brsmu.2021.064.).

Authors shall also discuss in the discussion section the literature dedicated to the polarization of alcohol consumption during the pandemic where it was found that heavy drinkers tend to increase consumption of alcohol during the pandemic, while those drinking less tend to increase alcohol consumption less or to decrease their alcohol consumption. Initial (before pandemic) level of alcohol consumption (frequency, one-time volume of drinking, frequency of heavy episodic drinking) is an important unmeasured confounder in analysis presented in the submitted paper.

Response: Thank you for your insightful and resourceful feedback. You raise an important concern about the potential role of unmeasured confounders in our analysis such as job or income loss.

First, regarding potential confounders, we did not adjust for those covariates because it is possible that they occurred after our exposure and that they may be part of the causal pathway between our exposure and our outcome and doing so would potentially introduce collider stratification bias as well as potentially treat a mediator as a confounder.

We acknowledge that there are limitations to not conducting a confounder analysis. We discuss these limitations under the Limitations section and cite relevant sources to support our reasoning on page 15.

Below, we cite an excerpt from an article that elaborates on our reasoning for not adjusting for these covariates.

https://pubmed.ncbi.nlm.nih.gov/33470711/which has citations you can pull from.

“Textbooks on epidemiology, as well as research articles about confounding adjustment, generally advise against controlling for variables that are measured after exposure has started. One reason is that adjustment for postexposure variables may lead to collider stratification bias. Another reason is that such variables may actually be mediators of the causal relationship between exposure and outcome, and conditioning on such variables may introduce bias. As indicated by VanderWeele: “…we often refrain from adjusting for covariates that occur temporally subsequent to the exposure.”

Second, our discussion including our limitations section now include an expanded discussion that explains that other stressors that have been found to be associated with increased alcohol use might be mediating or potentially confounding the relationship between violence exposure and alcohol use on pages 14-15.

Finally, the findings that higher consumption of alcohol use prior to the pandemic was positively associated with increased alcohol consumption and that those who drank less ten to have less increased consumption are interesting. Our study did not measure participants’ alcohol use prior to the pandemic and thus could not conduct a confounder analysis. However, we measured whether participants felt that they drink more during the COVID-19 pandemic than prior to the pandemic. Our analysis found that those who reported experiencing violence and those who reported experiencing more violence reported drinking more during the pandemic. We have added this discussion to the limitations section as well on page 15.

Response to Reviewer 2 Comments

Abstract

8. Page 2, Abstract, 6th line from bottom: replace 'thank' with 'than'

Response: Thank you for noticing this error. We have corrected the typo on page 2. It now states “than”.

Introduction

9. Page 5, Introduction: "GBV can consist of violence experienced from strangers, that state (i.e., the police, military, etc.)," revise to 'the' state

Response: We appreciate your note and have updated “that” to say “the.”

10. Page 5+6, Introduction: IPV acronym introduced twice. Suggest it instead be introduced in sentence "with a few national and local studies reporting significant increases in violence experiences, especially IPV, among cis women and gender minorities" and remove from other instances

Response: Thank you for this suggestion. We now recognize that “IPV” as an acronym was introduced twice and have corrected it to only be introduced the first time it appears in the paper. This can be found on page 6 in the sentence: “GBV can consist of violence experienced from strangers, the state (i.e., the police, military, etc.), or one’s family, community, or intimate partner (IPV).”

11. Page 5, Introduction: double opening bracket on reference 19

Response: We have deleted one of the opening brackets and appreciate your note.

12. Page 5, Introduction: Full stop/period missing from sentence ending "similarly found that the pandemic worsened incidence of domestic violence against women"

Response: Thank you. We have added a period to the end of this sentence.

13. Page 5, Introduction: In sentence following the above, revise tense for "reporting"

Response: Thank you. We have changed the tense of “reporting” to “reported.”

14. Page 6, Introduction: The first sentence in the aims paragraph took a few reads. Please revise for clarity. Perhaps consider splitting over two sentences, and/or utilise additional commas.

Response: Thank you for the suggestion. We have revised this sentence by removing some of the redundancies in word choice, thus increasing the overall clarity of the sentence. Here is the revised version:

“While the impact of the pandemic on alcohol use and on GBV has been documented, few studies have examined the co-occurrence between the two—an issue of concern given prior research demonstrating a relationship between alcohol use and violence.”

15. Page 4, Introduction: "Alcohol purchases increased by 54% in the first week of shelter-in-place orders in the US (5)." This seems to reference a journal article that referenced this statistic in the introduction and not the source material. Please ensure all citations cite the appropriate reference and original source material for the reader. Please also provide additional information on what the 54% increase in sales is being compared to (e.g. the previous year) and if the data is based on sales or self-reported purchasing.

Response: Thank you for this comment. We referred back to the original source and could not find the exact percentage. We have thus changed the reference to another source and have modified the sentence to the following on page 3:

“Alcohol sales in the U.S. increased by 20% in the first six months of the pandemic (March 2020 and September 2020) in comparison to sales during the same time period in 2019 (5).”

16. Page 6, Introduction: "In the United States, a study using 911 calls in Michigan documented a relationship between domestic violence reports and alcohol use (30)" please include a brief description of the nature of the relationship/association.

Response: Thank you for this feedback! We have refined the statement explaining this study to better describe the relationship/association. See as follows:

“In the United States, a study using 911 calls in Michigan documented that the strength of the relationship between domestic violence reports and alcohol sales more than doubled since the start of the pandemic.”

Methods

17. Methods and Materials: Please advise how interested participants responded to the recruitment drive (e.g. did they have to call, text, email etc). Would the required method of responding to the recruitment advertisements have affected who responded?

Response: Thank you for suggesting that we clarify this point. We have added the following sentence to share how participants were contacted: “To ensure multiple modes of contact, interested parties could contact o

Attachment

Submitted filename: Response to reviewer comments_Alcohol_violence.docx

pone.0316096.s001.docx (40.7KB, docx)

Decision Letter 1

Claudio Alberto Dávila-Cervantes

6 Dec 2024

Impact of the COVID-19 pandemic on violence exposure and alcohol use among adults who drink alcohol

PONE-D-24-21093R1

Dear Dr. Gyamerah,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication.

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Kind regards,

Claudio Alberto Dávila-Cervantes, Ph.D.

Academic Editor

PLOS ONE

Additional Editor Comments (optional):

Reviewers' comments:

Acceptance letter

Claudio Alberto Dávila-Cervantes

18 Dec 2024

PONE-D-24-21093R1

PLOS ONE

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