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. 2022 Jun 6;26(12):3862–3877. doi: 10.1007/s10461-022-03714-5

Prevalence and Risks of Depression and Substance Use Among Adults Living with HIV in the Asia–Pacific Region

Jeremy L Ross 1,, Awachana Jiamsakul 2, Anchalee Avihingsanon 3, Man Po Lee 4, Rossana Ditangco 5, Jun Yong Choi 6, Reena Rajasuriar 7, Sivaporn Gatechompol 3, Iris Chan 4, Maria Isabel Echanis Melgar 5,8, Jung Ho Kim 6, Meng Li Chong 7, Annette H Sohn 1, Matthew Law 2; on behalf of the Substance use, Stigma, Depression and Disability (S2D2) study group of IeDEA Asia-Pacific
PMCID: PMC9170121  PMID: 35668223

Abstract

Despite the mental health and substance use burden among people living with HIV (PLHIV) in the Asia–Pacific, data on their associations with HIV clinical outcomes are limited. This cross-sectional study of PLHIV at five sites assessed depression and substance use using PHQ-9 and ASSIST. Among 864 participants, 88% were male, median age was 39 years, 97% were on ART, 67% had an HIV viral load available and < 1000 copies/mL, 19% had moderate-to-severe depressive symptoms, and 80% had ever used at least one substance. Younger age, lower income, and suboptimal ART adherence were associated with moderate-to-severe depressive symptoms. Moderate-to-high risk substance use, found in 62% of users, was associated with younger age, being male, previous stressors, and suboptimal adherence. Our findings highlight the need for improved access to mental health and substance use services in HIV clinical settings.

Keywords: HIV, Asia, Depression, Substance use, ART adherence

Introduction

In 2020, the Asia–Pacific region was home to 5.8 million people living with HIV (PLHIV) [1]. In the era of effective combination antiretroviral therapy (cART), with increasing rates of ART coverage and virologic suppression, attention has shifted towards the management of HIV as a chronic disease and the need to better address comorbid conditions among PLHIV [2]. Continued HIV treatment cascade gains and reaching the UNAIDS ‘95–95–95’ targets (95% of PLHIV diagnosed, 95% initiating ART, and 95% achieving virologic suppression by 2030) will not be achieved without addressing mental health and substance use disorders among PLHIV [3].

The burden of mental health disorders and substance use among adult PLHIV is high and rates are often higher than those among HIV-negative counterparts [46]. Mental health disorders and use of certain substances are also associated with a higher risk of mortality among adult PLHIV [79]. Research among adult PLHIV cohorts, predominantly in developed countries, indicate that mental health and substance use disorders are associated with negative HIV clinical and treatment outcomes, such as poorer ART adherence and retention in care, and virologic failure [1015]. However, similar evidence from the Asia–Pacific region is sparse.

Studies of depression among different adult PLHIV populations in the Asia–Pacific region indicate a prevalence of between 3 and 60% depending on the study population, study methodology, and screening tool used [1621]. Data on the prevalence of substance use disorders among adult PLHIV in the region have often focused on opiate use in countries where it has historically driven local HIV epidemics, with more limited data on other substance use, such as amphetamines, sedatives and cannabis. Addressing the substantial mental health and substance use burden among PLHIV in the region would also have to be achieved in the context of persistent underfunding and scarcity of human resources for mental health services in the Asia–Pacific region [22]. We therefore conducted a cross-sectional study of depression and substance use among adult PLHIV under care at five HIV clinical centers in the Asia–Pacific region, and assessed risk factors for recent depression and substance use.

Methods

Study Design and Study Population

Adults living with HIV aged 18 years or older and under care at five sites were eligible to participate in this cross-sectional study. Participating sites are all tertiary care centers located in the following urban areas: Hong Kong SAR, China; Kuala Lumpur, Malaysia; Muntinlupa City, Metro Manila, Philippines; Seoul, South Korea; and Bangkok, Thailand. All study participants were consented and enrolled as they attended routine HIV clinical visits between July 2019 and June 2020.

Data Collection

Patient Health Questionnaire-9 (PHQ-9) was used to assess for depression over the past two weeks [23], and the Alcohol, Smoking, and Substance Involvement Screening Test (ASSIST v3.1) was used to assess ever using a substance, substance use in the past three months, and substance use risk [24]. If available, locally validated versions of PHQ-9 and ASSIST v3.1were used. If validated versions were not available, these screening tools were translated and reviewed by local investigators with related clinical or research experience. In one participating site a cultural adaptation process was developed that included a combination of translation, expert review, and local testing. Data on employment, household income, education level, HIV disclosure status, recent traumatic events or stressors, and family history of mental health diagnoses were collected as part of a study-specific questionnaire. PHQ-9 and ASSIST screenings were conducted by trained study staff or self-administered using electronic tablets. Positive screening results triggered clinical follow-up according to local standards of care, including urgent referrals of participants with suicidal thoughts for further psychiatric assessment and management.

Demographic data (i.e., age, sex, ethnicity, marital status), medical history (i.e., comorbid chronic conditions, sexually transmitted infections), laboratory data (i.e., weight, systolic and diastolic blood pressure, hemoglobin, complete blood count, lipid profile, liver function tests, glucose, creatinine, hepatitis serology), and HIV clinical data (i.e., HIV exposure category, date of HIV diagnosis, history of CDC stage C illness, CD4 cell count, HIV viral load, ART regimen, adverse events, adherence) were collected from existing medical records, as available. We collected all available CD4 cell count and HIV viral load test results for study participants up to the date of their last clinic visit, and Visual Analog Scale adherence assessments from the 12 months preceding the start of this study.

Statistical Analyses

We conducted risk factor analyses to assess associations with the following outcomes: (i) moderate-to-severe depressive symptoms; and (ii) moderate-to-high risk substance use of any drug. Patients were classified as having moderate-to-severe depressive symptoms if they had a PHQ-9 total score of 10 to 27. Moderate-to-high risk substance use was classified as having an ASSIST score ≥ 11 for alcohol or an ASSIST score ≥ 4 for other substances.

Patients with missing questionnaire responses to PHQ-9 and ASSIST were included in the analysis with missing responses imputed using the “hot deck” imputation method [25]. This imputation method replaces the missing value with a single data point imputed from randomly selected patients with complete dataset, who have similar characteristics to those with missing responses. The method was applied consistently across all other questionnaires within the study that required calculations of survey scores.

To account for heterogeneity across sites, we adjusted for World Bank country income grouping in all analyses. Logistic regression was used to analyse factors associated with moderate-to-severe depressive symptoms, and moderate-to-high risk substance use. Covariates included were demographics and HIV clinical characteristics, as well as socio-economic risk factors on education, employment, household income, and previous life stressors obtained from the study-specific questionnaire. Not reported or unknown values were included in the regression as a separate category. Regression analyses were fitted using backward stepwise selection process. Covariates with p < 0.10 in the univariate analysis were included in the multivariate model. Covariates with p < 0.05 in the multivariate regression model were considered statistically significant.

Data management and statistical analyses were performed using SAS software version 9.4 (SAS Institute Inc., Cary, NC, USA) and Stata software version 16.1 (Stata Corp., College Station, TX, USA).

Ethical Considerations

All participating study sites, the study coordinating center (TREAT Asia, amfAR/The Foundation for AIDS Research, Thailand), and the data management center (The Kirby Institute, University of New South Wales, Australia) obtained institutional review board (IRB) approvals for study participation. Study participants were consented using standard informed consent and study information forms.

Results

A total of 864 patients participated in the study (Table 1). Of the 864 study participants, 793 (92%) had at least a high school education, 622 (72%) were in full- or part-time employment, and 334 (39%) were from high income countries. Their median age at enrolment was 39 years (IQR 31–47), 758 (88%) were male, 460 (53%) acquired HIV through male-to-male sex, and 841 (97%) were on ART. Among those on ART, median duration of ART was 6 years (IQR 2–11).

Table 1.

Participant characteristics

Total patients (%)
Total 864 (100)
Sociodemographic characteristics
Age at study assessment (years) Median = 39, IQR (31–47)
≤ 30 203 (24)
31–40 270 (31)
41–50 255 (30)
> 50 136 (16)
Sex
Male 758 (88)
Female 106 (12)
Employment status
No 180 (21)
Yes, full-time 499 (58)
Yes, part-time, or occasionally 123 (14)
No response/not reported 62 (7)
Total household income
≤ 500 USD/local currency equivalent per month 212 (24)
501–2000 USD/local currency equivalent per month 258 (30)
> 2000 USD/local currency equivalent per month 257 (30)
No response/unknown/not reported 137 (16)
Highest education level
No formal education 4 (0)
Primary school 46 (5)
High school 231 (27)
College/vocational training 125 (14)
University 437 (51)
No response/not reported 21 (2)
HIV-related characteristics
HIV mode of exposure
Heterosexual contact 276 (32)
MSM 460 (53)
Injecting drug use 15 (2)
Other/Unknown 113 (13)
Year of ART initiation
< 2010 236 (27)
2010–2012 115 (13)
2013–2015 189 (22)
2016–2020 313 (36)
No ART/unknown 11 (1)
Viral Load at study assessment (copies/mL) Median = 33, IQR (19–39)
< 50 535 (62)
50–399 37 (4)
400–999 4 (0.5)
≥ 1000 49 (6)
Not tested 239 (28)
Median (IQR) viral load among those with VL ≥ 1000 (copies/mL)

107,644

(IQR 45,556–406,000)

CD4 at study assessment (cells/µL) Median = 519, IQR (333–725)
≤ 200 73 (8)
201–350 94 (11)
351–500 123 (14)
> 500 319 (37)
Not tested 255 (30)
Current ART
NRTI + NNRTI 455 (53)
NRTI + PI 55 (6)
INSTI 320 (37)
Other 11 (1)
None/unknown 23 (3)
ART adverse events in the previous year
No 603 (70)
Yes 93 (11)
Not reported/unknown 168 (19)
ART adherence in the previous year
≥ 95 566 (66)
< 95 58 (7)
Not reported/unknown 240 (28)
Prior AIDS diagnosis
No 556 (64)
Yes 202 (23)
Not reported 106 (12)
Disclosure of HIV status
Full (i.e. to all friends and family) 41 (5)
Partial (i.e. to some friends or family) 617 (71)
None, to no one 162 (19)
No response/ not reported/ unknown 44 (5)
Coinfections, comorbidities and medical history
Hepatitis B co-infection
Negative 297 (34)
Positive 34 (4)
Not tested 533 (62)
Hepatitis C co-infection
Negative 410 (47)
Positive 30 (3)
Not tested 424 (49)
History of STIs in the past 5 years
No 413 (48)
Yes 263 (30)
Not reported/unknown 188 (22)
Current chronic comorbid condition
No 352 (41)
Yes 150 (17)
Not reported/unknown 362 (42)
Previous mental health diagnosis
No 639 (74)
Yes 67 (8)
Not reported/unknown 158 (18)
Family history of mental health diagnoses
No 739 (86)
Yes 34 (4)
Not reported/unknown 91 (10)
Traumatic events or stressors experienced in the past 5 years (multiple answers allowed)
None 389 (45)
Unknown 46 (5)
Sexual assault or abuse 32 (4)
Physical assault or abuse 33 (4)
Physical pain or injury e.g. car accident, burns, dog attack 63 (7)
Major surgery or life-threatening illness 75 (9)
Natural disaster e.g. hurricane, flood, fire or earthquake 36 (4)
War or political violence (civil war, terrorism, refugee) 14 (2)
Death of family member, partner or friend 168 (19)
Divorce or separation from a partner 37 (4)
Unemployment, redundancy or significant financial concerns 190 (22)
Home relocation 90 (10)
Arrest or prison stay 14 (2)
Other 33 (4)
Not reported 24 (3)

ART antiretroviral therapy, STIs sexually transmitted infections, MSM men who have sex with men, NRTI nucleoside reverse transcriptase inhibitors, NNRTI non-NRTI, PI protease inhibitors, INSTI integrase inhibitors, USD US dollars

Of the 609 participants with a CD4 measurement available, median CD4 cell count was 519 cells/µL (IQR 333–725). Of the 625 participants with an available VL within six months of the study assessment, 576 (92%) had VL < 1000 copies/mL. Current ART regimens were nucleoside reverse transcriptase inhibitors (NRTI) plus non-nucleoside reverse transcriptase inhibitors (NNRTI) in 455 (53%), integrase inhibitors (INSTI) in 320 (37%), and NRTI plus protease inhibitors (PI) in 55 (6%). Overall, 639 (74%) had no previous mental health diagnosis, and 389 (45%) had experienced no traumatic event or stressors in the past five years.

Prevalence of Depressive Symptoms

On depression screening, 693 (80%) had a total PHQ-9 score above 0 (95% CI 77–83). There were 282 (33%) participants with minimal depressive symptoms (PHQ-9 score 1–4), 250 (29%) with mild depressive symptoms (PHQ-9 score 5–9), 103 (12%) with moderate depressive symptoms (PHQ-9 score 10–14), 39 (5%) with moderately severe depressive symptoms (PHQ-9 score 15–19), and 19 (2%) with severe depressive symptoms (PHQ-9 score 20–27) (Fig. 1). Suicidal thoughts on at least several days over the past two weeks were reported in 164 (19%) participants as indicated by a PHQ-9 question 9 score of 1 or above.

Fig. 1.

Fig. 1

PHQ-9 scores and severity classification of study participants (N = 864)

Factors Associated with Depressive Symptoms

Overall, 161 (19%) reported moderate-to-severe depressive symptoms, and associated risk factors are shown in Table 2. In the multivariate analysis, moderate-to-severe depressive symptoms were less likely in patients with older age at time of study assessment (41–50 years: aOR = 0.39, 95% CI 0.23–0.66, p < 0.001; > 50 years: aOR = 0.21, 95% CI 0.21–0.75, p = 0.004) compared to age ≤ 30 years, and those with higher monthly household income (> $501-$2000 USD: aOR = 0.52, 95% CI 0.31–0.87, p = 0.013; and > $2000 USD: aOR = 0.31, 95% CI 0.16–0.58, p < 0.001) compared to ≤ $500 USD. Participants reporting previous stressors (aOR = 3.05, 95% CI 1.95–4.75, p < 0.001) compared to no previous stressors, a previous mental health disorder (aOR = 2.97, 95% CI 1.65–5.32, p < 0.001) compared to none, and suboptimal ART adherence (< 95%) in the previous year (aOR = 2.41, 95% CI 1.23–4.75, p = 0.011) compared to adherence ≥ 95% were more likely to experience moderate-to-severe depressive symptoms. Moderate-to-high risk substance use was not found to be associated with moderate-to-severe depressive symptoms.

Table 2.

Factors associated with moderate-to-severe depressive symptoms by PHQ-9

Total patients Number with moderate to severe depression Univariate Multivariate
OR 95% CI p aOR 95% CI p
Total 864 161
Age at study assessment (years)  < 0.001  < 0.001
≤ 30 203 55 1 1
31–40 270 57 0.72 (0.47, 1.10) 0.131 0.81 (0.51, 1.28) 0.358
41–50 255 31 0.37 (0.23, 0.61)  < 0.001 0.39 (0.23, 0.66)  < 0.001
> 50 136 18 0.41 (0.23, 0.74) 0.003 0.40 (0.21, 0.75) 0.004
Sex
Male 758 149 1
Female 106 12 0.52 (0.28, 0.98) 0.042
Employment  < 0.001
No 180 49 2.41 (1.59, 3.66)  < 0.001
Full time 499 67 1
Part time 123 34 2.46 (1.54, 3.95)  < 0.001
Not reported/unknown 62 11
Household income (USD) per month  < 0.001  < 0.001
≤ $500 212 59 1 1
$501-$2000 258 40 0.48 (0.30, 0.75) 0.001 0.52 (0.31, 0.87) 0.013
> $2000 257 28 0.32 (0.19, 0.52)  < 0.001 0.31 (0.16, 0.58)  < 0.001
Not reported/unknown 137 34
Highest education level
No education 4 0 N/A
Primary to high school 277 52 1.01 (0.70, 1.45) 0.975
College to university 562 105 1
Not reported/unknown 21 4
HIV mode of exposure 0.031
Heterosexual contact 276 48 1
MSM 460 78 0.97 (0.65, 1.44) 0.880
Injecting drug use 15 6 3.17 (1.08, 9.31) 0.036
Other/Unknown 113 29 1.64 (0.97, 2.77) 0.065
Year of ART initiation 0.066
< 2010 236 31 1
2010–2012 115 18 1.23 (0.65, 2.30) 0.524
2013–2015 189 41 1.83 (1.10, 3.06) 0.021
2016–2020 313 69 1.87 (1.18, 2.97) 0.008
No ART/unknown 11 2 1.47 (0.30, 7.12) 0.633
Viral load at study assessment (copies/mL) 0.016
< 50 535 82 1
50–399 37 7 1.29 (0.55, 3.03) 0.561
400–999 4 1 1.84 (0.19, 17.92) 0.599
≥ 1000 49 14 2.21 (1.14, 4.29) 0.019
Not tested 239 57
CD4 at study assessment (cells/µL)  < 0.001
≤ 200 73 23 1
201–350 94 21 0.63 (0.31, 1.25) 0.184
351–500 123 21 0.45 (0.23, 0.88) 0.021
> 500 319 43 0.34 (0.19, 0.61)  < 0.001
Not tested 255 53
Current ART 0.035
NRTI + NNRTI 455 88 1
NRTI + PI 55 14 1.42 (0.74, 2.73) 0.286
INSTI 320 48 0.74 (0.50, 1.08) 0.119
Other 11 2 0.93 (0.20, 4.37) 0.923
None/unknown 23 9 2.68 (1.12, 6.39) 0.026
ART adverse events in the previous year
No 603 88 1
Yes 93 15 1.13 (0.62, 2.04) 0.698
Not reported/unknown 168 58
ART adherence in the previous year
≥ 95 566 80 1 1
< 95 58 16 2.31 (1.24, 4.31) 0.008 2.41 (1.23, 4.75) 0.011
Not reported/unknown 240 65
Prior AIDS diagnosis
No 556 85 1
Yes 202 37 1.24 (0.81, 1.90) 0.316
Not reported 106 39
HIV disclosure status 0.173
Full 41 9 1
Partial 617 122 0.88 (0.41, 1.88) 0.735
None, to no one 162 22 0.56 (0.24, 1.33) 0.187
No response/not reported/unknown 44 8
Hepatitis B co-infection
Negative 297 36 1
Positive 34 3 0.70 (0.20, 2.41) 0.574
Not tested 533 122
Hepatitis C co-infection
Negative 410 46 1
Positive 30 3 0.88 (0.26, 3.01) 0.838
Not tested 424 112
History of STIs in the past 5 years
No 413 58 1
Yes 263 43 1.20 (0.78, 1.84) 0.413
Not reported/unknown 188 60
Current chronic comorbid condition
No 352 58 1
Yes 150 32 1.37 (0.85, 2.22) 0.195
Not reported/unknown 362 71
Previous mental health diagnosis
No 639 83 1 1
Yes 67 25 3.99 (2.31, 6.88)  < 0.001 2.97 (1.65, 5.32)  < 0.001
Not reported/unknown 158 53
Family history of mental health diagnoses
No 739 125 1
Yes 34 9 1.77 (0.81, 3.88) 0.155
Not reported/unknown 91 27
Previous stressors
No 369 32 1 1
Yes 437 116 3.81 (2.50, 5.79)  < 0.001 3.05 (1.95, 4.75)  < 0.001
Not reported/unknown 58 13
Moderate to high risk substance use
No 439 68 1
Yes 425 93 1.53 (1.08, 2.16) 0.016
World Bank country income grouping
High 334 52 1 1
Upper-middle and lower-middle 530 109 1.40 (0.98, 2.02) 0.067 0.82 (0.49, 1.36) 0.435

Not reported values were included in the analysis as a separate category but were excluded from test for heterogeneity

Global p-value for age, viral load, CD4, household income were test for trend

OR odds ratio, aOR adjusted odds ratio, CI confidence interval, ART antiretroviral therapy, STIs sexually transmitted infections, MSM men who have sex with men, NRTI nucleoside reverse transcriptase inhibitors, NNRTI non-NRTI, PI protease inhibitors, INSTI integrase inhibitors

Prevalence of Substance Use and Substance Use Risk

On screening with ASSIST, 681 (80%) participants reported ever using at least one substance, and 553 (64%) reported using at least one substance in the past three months. Of those who ever used at least one substance, 407 (60%) used tobacco, 597 (88%) alcohol, 130 (19%) cannabis, 36 (5%) cocaine, 151 (22%) amphetamines, 33 (5%) inhalants, 101 (15%) sedatives, 43 (6%) hallucinogens, and 21 (3%) opioids (Table 3). Of those who used at least one substance in the past three months, 282 (51%) used tobacco, 443 (80%) alcohol, 40 (7%) cannabis, 7 (1%) cocaine, 69 (12%) amphetamines, 14 (3%) inhalants, 62 (11%) sedatives, 7 (1%) hallucinogens, and 2 (0%) opioids.

Table 3.

ASSIST screening of recent and lifetime substance use, and risk-level

Substance Total patients used substance in last 3 months (%) Total patients ever used substance (%) Total patients with lower risk (%) Total patients with moderate risk (%) Total patients with high risk (%)
Tobacco 282 (51) 407 (60) 123 (30) 252 (62) 32 (8)
Alcohol 443 (80) 597 (88) 376 (63) 184 (31) 37 (6)
Cannabis 40 (7) 130 (19) 101 (78) 29 (22) 0 (0)
Cocaine 7 (1) 36 (5) 31 (86) 5 (14) 0 (0)
Amphetamines 69 (12) 151 (22) 75 (50) 66 (44) 10 (7)
Inhalants 14 (3) 33 (5) 19 (58) 13 (39) 1 (3)
Sedatives 62 (11) 101 (15) 47 (47) 50 (50) 4 (4)
Hallucinogens 7 (1) 43 (6) 39 (91) 4 (9) 0 (0)
Opioids 2 (0) 21 (3) 17 (81) 4 (19) 0 (0)
Other 4 (1) 14 (2) 9 (64) 5 (36) 0 (0)
Total patients 553 681 447 398 69

A participant may take multiple substances and the total patients at the bottom of each column is the count of individual patients. Percentages are column percentages for recent and lifetime substance use columns. Percentages are row percentages for risk-level columns

Of the 681 study participants who ever used at least one substance, 425 (62%) were classified as having moderate-to-high risk ASSIST scores to any drug. This included 284/407 (70%) of those that ever used tobacco, 221/597 (37%) alcohol, 29/130 (22%) cannabis, 5/36 (14%) cocaine, 76/151 (51%) amphetamine, 14/33 (42%) inhalants, 54/101 (54%) sedatives, 4/43 (9%) hallucinogens, and 4/21 (19%) of those that ever used opioids.

Factors Associated with Substance Use Risk

Overall, 425 (49%) were classified as having moderate-to-high risk substance use to any drug. Multivariate analyses indicated that those age > 50 years (aOR = 0.60, 95% CI 0.37–0.96, p = 0.033) compared to age ≤ 30 years, and females (aOR = 0.38, 95% CI 0.23–0.61, p < 0.001) compared to males, were less likely to report moderate-to-high risk substance use (Table 4). Those who had partially (aOR = 0.30, 95% CI 0.14–0.63, p = 0.002) or not disclosed their HIV status to others (aOR = 0.33, 95% CI 0.15–0.74, p = 0.007) compared to those who had fully disclosed, and participants from upper-middle and lower-middle income countries (aOR = 0.60, 95% CI 0.43–0.82, p = 0.001) compared to those from high-income countries, were less likely to report moderate-to-high risk substance use. Participants in part-time employment (aOR = 2.07, 95% CI 1.34–3.19, p = 0.001) compared to full time, and those reporting previous stressors (aOR = 1.63, 95% CI 1.21–2.20, p = 0.001) compared to none, and suboptimal ART adherence (< 95%) in the previous year (aOR = 2.90, 95% CI 1.55–5.40, p = 0.001) compared to adherence ≥ 95% were more likely to report moderate-to-high risk substance use. Moderate-to-severe depression was not found to be associated with moderate-to-high risk substance use.

Table 4.

Factors associated with moderate to high risk substance use

Total patients Number with moderate to high risk substance use Univariate Multivariate
OR 95% CI p aOR 95% CI p
Total 864 425
Age at study assessment (years) 0.002 0.008
≤ 30 203 107 1 1
31–40 270 152 1.16 (0.80, 1.67) 0.438 1.24 (0.84, 1.82) 0.279
41–50 255 112 0.70 (0.49, 1.02) 0.062 0.78 (0.52, 1.16) 0.213
> 50 136 54 0.59 (0.38, 0.92) 0.019 0.60 (0.37, 0.96) 0.033
Sex
Male 758 398 1 1
Female 106 27 0.31 (0.20, 0.49)  < 0.001 0.38 (0.23, 0.61)  < 0.001
HIV mode of exposure 0.096
Heterosexual contact 276 119 1
MSM 460 238 1.41 (1.05, 1.91) 0.024
Injecting drug use 15 9 1.98 (0.69, 5.71) 0.207
Other/Unknown 113 59 1.44 (0.93, 2.24) 0.103
Viral load at study assessment (copies/mL) 0.982
< 50 535 256 1
50–399 37 16 0.83 (0.42, 1.63) 0.588
400–999 4 0 N/A
≥ 1000 49 25 1.14 (0.63, 2.04) 0.671
Not tested 239 128
CD4 at study assessment (cells/µL) 0.179
≤ 200 73 29 1
201–350 94 49 1.65 (0.89, 3.07) 0.112
351–500 123 54 1.19 (0.66, 2.14) 0.567
> 500 319 163 1.59 (0.94, 2.66) 0.081
Not tested 255 130
Current ART 0.270
NRTI + NNRTI 455 214 1
NRTI + PI 55 28 1.17 (0.67, 2.04) 0.587
INSTI 320 163 1.17 (0.88, 1.56) 0.284
Other 11 9 5.07 (1.08, 23.71) 0.039
None/unknown 23 11 1.03 (0.45, 2.39) 0.941
Hepatitis B co-infection
Negative 297 132 1
Positive 34 8 0.38 (0.17, 0.88) 0.023
Not tested 533 285
Hepatitis C co-infection
Negative 410 169 1
Positive 30 13 1.09 (0.52, 2.30) 0.821
Not tested 424 243
Prior AIDS diagnosis
No 556 268 1
Yes 202 100 1.05 (0.76, 1.45) 0.751
Not reported 106 57
Household income (USD) per month 0.012
≤ $500 212 95 1
$501–$2000 258 112 0.94 (0.66, 1.36) 0.761
> $2000 257 144 1.57 (1.09, 2.26) 0.016
Not reported/unknown 137 74
Employment  < 0.001  < 0.001
No 180 78 0.87 (0.61, 1.22) 0.411 0.76 (0.52, 1.12) 0.168
Full time 499 234 1 1
Part time 123 79 2.03 (1.35, 3.06) 0.001 2.07 (1.34, 3.19) 0.001
Not reported/unknown 62 34
Highest education level 0.579
No education 4 1 0.34 (0.03, 3.25) 0.346
Primary to high school 277 133 0.93 (0.70, 1.24) 0.622
College to university 562 280 1
Not reported/unknown 21 11
HIV disclosure status 0.025 0.007
Full 41 29 1 1
Partial 617 302 0.40 (0.20, 0.79) 0.009 0.30 (0.14, 0.63) 0.002
None, to no one 162 76 0.37 (0.17, 0.77) 0.008 0.33 (0.15, 0.74) 0.007
No response/not reported/unknown 44 18
Previous stressors
No 369 156 1 1
Yes 437 238 1.63 (1.23, 2.16) 0.001 1.63 (1.21, 2.20) 0.001
Not reported/unknown 58 31
Current chronic comorbid condition
No 352 191 1
Yes 150 76 0.87 (0.59, 1.27) 0.460
Not reported/unknown 362 158
Previous mental health diagnosis
No 639 297 1
Yes 67 39 1.60 (0.96, 2.67) 0.069
Not reported/unknown 158 89
Family history of mental health diagnoses
No 739 349 1
Yes 34 23 2.34 (1.12, 4.86) 0.023
Not reported/unknown 91 53
History of STIs in the past 5 years
No 413 167 1
Yes 263 153 2.05 (1.50, 2.80)  < 0.001
Not reported/unknown 188 105
Year of ART initiation 0.045
 < 2010 236 97 1
2010–2012 115 61 1.62 (1.03, 2.54) 0.035
2013–2015 189 93 1.39 (0.94, 2.04) 0.095
2016–2020 313 169 1.68 (1.20, 2.37) 0.003
No ART/unknown 11 5 1.19 (0.35, 4.02) 0.775
ART adverse events in the previous year
No 603 290 1
Yes 93 41 0.85 (0.55, 1.32) 0.472
Not reported/unknown 168 94
ART adherence in the previous year
≥ 95 566 259 1 1
< 95 58 41 2.86 (1.59, 5.15)  < 0.001 2.90 (1.55, 5.40) 0.001
Not reported/unknown 240 125
Moderate to severe depression
No 703 332 1
Yes 161 93 1.53 (1.08, 2.16) 0.016
World Bank country income grouping
High 334 187 1 1
Upper-middle and lower-middle 530 238 0.64 (0.49, 0.84) 0.002 0.60 (0.43, 0.82) 0.001

Not reported values were included in the analysis as a separate category but were excluded from test for heterogeneity

Global p-value forage, viral load, CD4, household income were test for trend

OR odds ratio, aOR adjusted odds ratio, CI confidence interval, ART antiretroviral therapy, STIs sexually transmitted infections, MSM men who have sex with men, NRTI nucleoside reverse transcriptase inhibitors, NNRTI non-NRTI, PI protease inhibitors, INSTI integrase inhibitors

Discussion

In this cross-sectional study of 864 adult PLHIV in care at five HIV clinical sites in five countries in the Asia–Pacific region, 19% had moderate-to-severe depressive symptoms, 19% had suicidal thoughts, 80% ever used at least one substance, and 64% used at least one substance in the past three months. Alcohol, tobacco, amphetamine, sedative, and cannabis use was common, as was moderate-to-high risk substance use. Moderate-to-severe depressive symptoms and moderate-to-high risk substance use were both associated with younger age, previous stressors, and previous suboptimal ART adherence. Neither was associated with mean CD4 cell count or VL < 1000 copies/mL. We found no association between moderate-to-high risk substance use and moderate-to-severe depressive symptoms.

Rates and risk factors for depressive symptoms in our cohort are consistent with those documented in similar adult PLHIV cohorts in the region, for example a study of predominantly male adult PLHIV in Southern India, screened using PHQ-9, found that 23% had moderate-to-severe depressive symptoms [26] and a meta-analysis of PLHIV in sub-Saharan Africa found a 14% prevalence of depressive symptoms among PLHIV on ART based on a PHQ-9 cut-off score of ≥ 10 [27]. The same analysis found depressive symptoms were associated with lower personal income, and an analysis of adult PLHIV in East Africa found both stressful life events and low personal income were associated with depression [28]. Rates of suicidal thoughts in our cohort appear higher than those documented elsewhere. A recent study of adult PLHIV in Indonesia identified lifetime suicidal ideation in 23% [29], and a survey of adult PLHIV in Nigeria found a 12-month prevalence rate for suicidal ideation of 2.9% [30]. These differences are likely explained by differences in screening instruments used, and differences in key sociodemographic characteristics often linked to mental health status, such as sex, age, marital status, and income and education levels.

The high rates of alcohol and tobacco use found in our cohort are consistent with those observed in other adult PLHIV cohorts in the region. Studies among HIV-positive adults in Nepal and India found a prevalence of alcohol use disorder of 25.7 and 12.8% [31, 32]. Recent tobacco use among adult men-who-have-sex-with-men (MSM) living with HIV in Taiwan was just under 50% [33]. Amphetamine use in our adult PLHIV cohort are consistent with those reported in populations at risk of HIV infection in the region, with rates of 7% reported among Cambodian female sex workers [34] and 30% among MSM in Vietnam [35]. Although the substantial proportions of sedative users in our cohort have not been widely documented elsewhere in the region, a study in Taiwan did find that PLHIV had an increased risk of sedative use compared to those without HIV, after adjusting for demographic data and psychiatric comorbidities [36]. Factors associated with moderate-to-high risk substance use are also consistent with those identified in cohorts elsewhere. Meta-analyses have found higher prevalence of both alcohol use disorders and current smoking among male PLHIV than female PLHIV, and a higher prevalence of alcohol use disorders among PLHIV in developed countries than those in developing countries [37, 38].

Our finding that those with suboptimal adherence in the previous year were more likely to experience moderate-to-severe depressive symptoms and report moderate-to-high risk substance use adds to the substantial body of evidence from this region linking mental health issues, substance use and poorer adherence across different adult PLHIV populations [20, 32, 3943]. Our finding that mean CD4 cell count and viral load < 1000 copies/mL were not risk factors for moderate-to-high risk substance use or moderate-to-severe depressive symptoms, adds to the insubstantial and conflicting regional evidence of associations between mental health or substance use and HIV clinical or treatment outcomes. In a systematic review published in 2018, none of the three Asia–Pacific studies included identified mental health disorders or substance use to be a predictor of poor retention in HIV care for adults living with HIV [14]. However, an analysis of adult PLHIV in South Korea did find patients with depression were more likely to frequently miss clinical appointments and have a higher cumulative time lost to follow-up per month compared to patients without depression [44]. Among HIV-positive heterosexual men and MSM in Thailand, non-injection substance use was associated with a lower likelihood of having an undetectable viral load [45], but a study of predominantly male adult PLHIV in care at community and hospital-based ART clinics in Vietnam found no association between mental health symptoms and virologic suppression [46].

Despite a high burden of depression and substance use, and the potential for negative impacts on HIV clinical outcomes, there remain substantial gaps in access to mental health and substance use related care for adult PLHIV in the region, and fragmented integration of related services within HIV clinical settings. In a global analysis, only 43% of 28 HIV clinical Asia–Pacific sites screened for depression and 39% for substance use disorders, rates of screening that were among the lowest of any region [47]. We feel the relatively low screening rates for depression and substance use in HIV clinical settings in the region are likely reflective of a general lack of resources dedicated to addressing mental health and substance use issues across all settings and populations in the region, and related to this, limited capacity of health care workers and health systems to support the delivery of such services [22]. The same global analysis reported on-site management of substance use disorders in 57%, and another global analysis noted substantial gaps persist in the integration of substance use services into HIV care settings, particularly in resource-constrained settings [48]. A study in Malaysia published in 2020, found that over 80% of adult PLHIV with prevalent psychiatric symptoms had not previously been recognized clinically, and that only 32% of participants with severe mental health symptoms received a psychiatric referral [49]. This limited integration is in spite of growing regional evidence of the effectiveness of non-pharmacological mental health and substance use interventions among adult PLHIV populations, including telephone-based behavioral therapy [50], group coping interventions [51], group rational-emotive-behavior-based therapy [52], brief cognitive behavioral therapy interventions [53], and home-based social support [54].

Further integration of mental health and substance use services within HIV clinical settings in the region is exacerbated by a lack of local research on optimal integration models and strategies. In recent systematic reviews of interventions and approaches to integrating HIV, mental health or substance use services, none or very few of the eligible articles were from the Asia–Pacific region [55, 56]. The limited research on approaches to integrating HIV, mental health and substance use services in the region are likely related to a lack of implementation research capacities in the region, and the relatively recent emergence of implementation research as a priority research discipline in the region. Indeed, the importance of implementation research to inform the integration, adaptation or scale-up of mental health or substance use services within HIV care in Asian or resource-limited settings is increasingly being highlighted [48, 57, 58].

It is worth noting that our study had a number of limitations. As a cross-sectional study, it can say nothing of trends in mental health or substance use disorders, or incidence levels. Study methodology did not support assessment of causal relationships between depression, substance use and HIV clinical and treatment outcomes. Because study participants were only recruited from adult PLHIV in routine care, those with more severe mental health or substance use issues may have dropped out of care, raising the potential for sampling bias. Formal validation of translated mental health and substance use screening tools was not conducted among the study population. Despite these limitations, we feel the study provides an informative picture of the mental health and substance use burden, risks and impacts among adults living with HIV in the region in the pre-COVID-19 pandemic period.

Conclusions

The high prevalence of mild to severe depressive symptoms, suicidal ideation, and substance use, and their association with suboptimal ART adherence, in our adult PLHIV cohort highlight the need to improve access to and integration of mental health and substance use screening and management in HIV clinical settings in the Asia–Pacific region. Enhanced linkages to specialist mental health care for further assessment or interventions, should also be considered in the context of HIV clinical settings. It is important that service integration is localised to address local mental health and substance use issues, particularly depression, suicidality, tobacco, alcohol, amphetamine and sedative use. Further implementation research would inform optimal approaches to integrating mental health and substance use services within HIV care in the region.

Acknowledgements

The authors are grateful to the study participants and all site staff for their commitment to the study. The S2D2 Study Group: MP Lee, I Chan, YT Chan, SM Au, Queen Elizabeth Hospital, Hong Kong SAR; JY Choi, Na S, JH Kim, JM Kim, Yonsei University College of Medicine, Seoul, South Korea; I Azwa, R Rajasuriar, ML Chong, JY Ong, University Malaya Medical Centre, Kuala Lumpur, Malaysia; R Ditangco, MI Melgar, ES Gomez, Research Institute for Tropical Medicine, Muntinlupa City, Philippines; A Avihingsanon, C Padungpol, J Jamthong, S Thammasala, S Phonphithak, P Chaiyahong, HIV-NAT/Thai Red Cross AIDS Research Centre, Bangkok, Thailand; AH Sohn, JL Ross, B Petersen, C Chansilpa, TREAT Asia, amfAR, Bangkok, Thailand; MG Law, A Jiamsakul, The Kirby Institute, UNSW Sydney, Australia.

Author Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by AJ, SG, IC, MIEM, JHK, and MLC. The first draft of the manuscript was written by JLR and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Funding

Funding support was provided through a grant to amfAR, The Foundation for AIDS Research from the U.S. National Institutes of Health’s National Institute of Allergy and Infectious Diseases, the Eunice Kennedy Shriver National Institute of Child Health and Human Development, the National Cancer Institute, the National Institute of Mental Health, the National Institute on Drug Abuse, the National Heart, Lung, and Blood Institute, the National Institute on Alcohol Abuse and Alcoholism, the National Institute of Diabetes and Digestive and Kidney Diseases, and the Fogarty International Center (IeDEA; U01AI069907). The Kirby Institute is funded by the Australian Government Department of Health and Ageing. The content of this research is solely the responsibility of the authors and does not necessarily represent the official views of any of the institutions above.

Data Availability

Study data available on request.

Code Availability

Codes available on request.

Declarations

Conflict of interest

The authors have no relevant financial or non-financial interests to disclose.

Ethical Approval

This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the following institutional research ethics committees: Research Ethics Committee (Kowloon Central / Kowloon East), Hospital Authority IRB, Hong Kong SAR; Research Institute for Tropical Medicine (RITM) Institutional Review Board, Muntinlupa City, the Philippines; Severance Hospital Yonsei University College of Medicine Institutional Review Board, Seoul, South Korea; Institutional Review Board Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Medical Research Ethics Committee, University Malaya Medical Centre, Kuala Lumpur, Malaysia; Human Research Ethics Committee (HREC), The University of New South Wales, UNSW Sydney, NSW, Australia; and Advarra, Inc. Institutional Review Board, Maryland, U.S.A.

Consent to Participate

Informed consent was obtained from all individual participants included in the study.

Consent for Publication

Not applicable. Identifying information, data or photographs of individuals are not included in this article.

Footnotes

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Associated Data

This section collects any data citations, data availability statements, or supplementary materials included in this article.

Data Availability Statement

Study data available on request.

Codes available on request.


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