Abstract
Background
Childhood maltreatment has been linked to adulthood cardiovascular disease (CVD). Little is known about the relationship between intimate partner violence (IPV) in late adolescence and young adulthood and CVD risk later in adulthood.
Purpose
To examine whether IPV perpetration and victimization experienced in late adolescence and young adulthood are associated with CVD risk among adults in the United States and whether this relationship differs by sex.
Methods
Data include 9,976 participants (50% female) in the National Longitudinal Study of Adolescent to Adult Health. Physical and sexual IPV were measured at wave 3 (2001/02) with items from the revised Conflict Tactics Scales. Participants’ 30-year risk of CVD was calculated at wave 4 (2008/09) using a Framingham prediction model. Linear regression models adjusted for confounders and IPV by sex interaction terms were tested to examine the relationship.
Results
The mean CVD risk score was 13.18% (95% CI: 12.71, 13.64). A one-standard deviation increase in the victimization score was associated with a 0.28% (95% CI: 0.03, 0.54) increase in CVD risk. Perpetration was similarly positively associated with CVD risk (beta: 0.33, 95% CI: 0.03, 0.62). When measured as a composite, all violence types were associated with increased CVD risk but only prior exposure to both victimization and perpetration reached statistical significance (0.62%, 95% CI: 0.01, 1.22). No differences by sex were detected.
Conclusions
Effect sizes are not large, but early detection of increased CVD risk in this relatively young population is notable and worthy of further study to inform the clinical response.
Keywords: cardiovascular diseases, domestic violence, adolescent health services, National Longitudinal Study of Adolescent Health
Introduction
Cardiovascular disease (CVD) primarily affects individuals of middle and old age; however risk factors for CVD are apparent at a much younger age (Eaton et al., 2010; Kavey et al., 2003; Skinner and Skelton, 2014). Adverse childhood experiences, particularly child maltreatment, have been associated with CVD in adulthood (Batten et al., 2004; Dong et al., 2004; Wegman and Stetler, 2009). Less is known, however, about the potential relationship between highly prevalent forms of violence in adolescence and young adulthood, such as intimate partner violence (IPV) and CVD risk. Ten percent of US high school students in the 2013 Youth Risk Behavior Survey reported physical partner violence in the prior year (Kann et al., 2014). Further, the majority of the 29% of men and 36% of women who reported lifetime exposure to IPV in the 2010 National Intimate Partner and Sexual Violence Survey were victimized for the first time before the age of 25 (Breiding et al., 2014). Greater attention to the role of partner violence exposure during adolescence and young adulthood in the development of CVD risk is warranted to identify primary prevention strategies.
Existing research on the relationship between IPV and CVD risk has focused almost exclusively on adult female populations and has generated inconclusive findings (Suglia et al., 2015). IPV has been positively associated with self-reported diagnosis of CVD (Matthew J. Breiding et al., 2008; Coker et al., 2000b; Gass et al., 2010; Lown and Vega, 2001), smoking (Crane et al., 2013), diabetes (Mason et al., 2013), hypertension (Gass et al., 2010; Mason et al., 2012), use of antihypertensive medication (Stene et al., 2013), and weight gain, higher body mass index and obesity (Clark et al., 2014b; Garcia et al., 2014; Sato-DiLorenzo and Sharps, 2007; Yount and Li, 2011). Alternatively, studies have found a lack of association with CVD and many of these same risk factors (M. J. Breiding et al., 2008; Coker et al., 2000b; Gass et al., 2010; Lown and Vega, 2001; Stene et al., 2013). In addition to disparate findings, most prior research examines individual risk factors associated with IPV despite the fact that risk factors cluster in individuals (Freedman et al., 1999) and few studies have examined the relationship between CVD risk and exposure to both victimization and perpetration (see (Clark et al., 2014a; Crane et al., 2014) for examples) despite the prominence of bi-directionally violent relationships, especially among adolescents and young adults (Gray and Foshee, 1997; Whitaker et al., 2007).
CVD risk manifests over the life course and is prominent in adolescence and young adulthood.(Clark et al., 2014a) This fact, with growing evidence of the cost effectiveness of primary prevention,(Weintraub et al., 2011) has prompted increasing attention to the extent of early life CVD risk and its contributing factors to inform prevention strategies. The present study addresses this need using a nationally representative, longitudinal study of adolescents to examine whether IPV victimization and perpetration experienced during adolescence and young adulthood is associated with increased CVD risk in adulthood and to determine whether this relationship differs by sex.
Methods
The study sample includes participants of the National Longitudinal Study of Adolescent to Adult Health (Add Health) which is a longitudinal study of a nationally representative sample of adolescents in grades 7–12 in the U.S. during the 1994–95 school year (Harris et al., 2009) who have been followed into adulthood (2008–09). Student rosters were used to select a sample of 20,745 adolescents who were interviewed at baseline (wave 1, 1995, participant age range 11–21). A parental figure was also interviewed at this time. A year later, a second wave of data collection occurred. In 2001 and 2002, approximately 6 years after baseline, a third wave of data was collected (age range of participants, 18–28). In 2008 and 2009, approximately 13 years since baseline and approximately 7 years since wave 3, a fourth wave of data was collected (age range of participants, 24–34). Response rates across the 4 waves of data collection were 79%, 89%, 77% and 80%, respectively, and the parental response rate for wave 1 was 85%. The present study is restricted to respondents who had valid sampling weights (n=12,288), reported on a relationship at wave 3 (first time point in which IPV perpetration was asked in addition to victimization) in which IPV was assessed (n=10,171), and were free from CVD and cancer at the time of CVD risk factor assessment at Wave 4 (n=9,976). Participants provided written informed consent, and the parent study was approved by the Institutional Review Board (IRB) of the University of North Carolina, Chapel Hill. The University of Minnesota IRB determined that the present analysis did not meet the regulatory definition of human subjects’ research due to the sole use of de-identified data.
Measures
Exposure
IPV was retrospectively assessed at the wave 3 interview in reference to relationships that occurred between the summer of 1995 (average age 16) and the wave 3 interview (2001/02, average age 22) representing up to 7 years of recall. Four items measured victimization (threatened by partner with violence, pushed or shoved, or had something thrown at you that could hurt; partner slapped, hit or kicked you; partner made you have sexual relations when you did not want to; you had an injury, such as a sprain, bruise, or cut because of a fight with your partner); these items were based on the Revised Conflict Tactics Scales (Straus et al., 1996), the most frequently used scale to assess IPV. The same 4 items also were used to assess perpetration. The scale was self-administered using a laptop computer to protect the participant’s privacy and to reduce the likelihood of socially desirable responses.
Continuous scales of IPV victimization and perpetration were created using Rasch modeling based on the conditional probabilities of giving a positive response to each item given its severity and the true but unobserved violence exposure level of each person. Because acts of low/moderate violence severity are most frequently perpetrated by U.S. couples in intimate relationships (Black et al., 2011), items that were more commonly reported were considered less severe (i.e., being threatened with violence versus being forced to have sexual relations). The model is generalized to account for whether the event occurred once or more than once in the same relationship and whether the event occurred in more than one relationship (Suglia et al., 2008). Separate scales for men and women were created; however, the analytic procedure generates scores with similar distributions enabling them to be combined into one perpetration and one victimization scale. Each score was scaled by its standard deviation. To assess whether IPV predicted CVD risk differently accordingly to the dynamics of the prior experience, a nominal composite variable was created with the following categories: no IPV experience, victimization only, perpetration only, and bi-directional (both victimization and perpetration).
Outcomes
The risk of developing CVD over a 30-year time frame was estimated using a prediction model developed by Pencina et al. (Pencina et al., 2009). According to guidelines from the American Heart Association and the American College of Cardiology, long-term risk prediction is an appropriate assessment tool in individuals as young as 20 (Goff et al., 2014) and average long-term risk CVD in the Add health population has been shown to be high (Clark et al., 2014a). Data used in the prediction model were collected at wave 4 when the participations were on average 29 years of age (2008/09). The function predicts the risk of occurrence of CVD (coronary death, myocardial infarction, coronary insufficiency, angina pectoris, stroke, transient ischemic attack, intermittent claudication, and congestive heart failure) over a 30-year time frame (Pencina et al., 2009). Risk factors used to calculate the 30-year FRS include sex, age, systolic blood pressure (SBP), use of antihypertensive medication, smoking, diabetes, and body mass index (BMI), all of which were ascertained from interview data, anthropometric measurements, and biological specimens taken at wave 4. Standardized approaches to height and measurements were used (Entzel et al., 2009). SBP was measured after a 5-min seated rest; 3 measurements were obtained at 30-second intervals, and the latter 2 readings were averaged for resting SBP (Entzel et al., 2009). Use of antihypertensive medication in the prior 4 weeks was assessed by the interviewer through a medication inventory (Tabor and Whitsel, 2010). Cigarette smoking in the 30 days preceding the interview was ascertained by self-report. Diabetes mellitus was considered present if the respondent had: a fasting glucose ≥ 126 mg/dl, a non-fasting glucose ≥ 200 mg/dl, an HbA1c ≥ 6.5%, self-reported a health provider diagnosis of diabetes except during pregnancy, or used anti-diabetic medication in the prior four weeks (Whitsel et al., 2012).
Potential Confounders
Socio-demographic variables were included in the analysis because they have been associated with CVD risk (Go et al., 2013; Murray et al., 2010) and IPV experience (Cunradi et al., 2000; Field and Caetano, 2005; Renner and Whitney, 2010). Socio-demographics collected at wave 3 include age, sex (male, female), race/ethnicity (Non-Hispanic White, Black, Native American/American Indian, Asian/Pacific Islander, Mixed race (i.e., report of two or more races), and Hispanic), educational attainment (number of years of education past the 6th grade), and financial stress (a positive response to any of 7 items indicating an inability to pay for basics). Indicators of early life socioeconomic status included educational attainment of the parental figure at wave 1 (1994/95) and neighborhood poverty defined as the proportion of families in the census block group with incomes in 1989 below the poverty line.
Frequency of parent/adult-caregiver perpetrated abuse and neglect that occurred prior to the 6th grade was assessed at wave 3 and was included in the analysis because experiencing childhood maltreatment is independently associated with later IPV experience (Renner and Whitney, 2012) and CVD risk in adulthood (Wegman and Stetler, 2009). Abuse and neglect that occurred prior to the 6th grade was retrospectively assessed at wave 3 using modified versions of existing scales (Finkelhor and Dziuba-Leatherman, 1994; Hussey et al., 2006; Straus et al., 2008). Each type of maltreatment was defined similarly to prior analyses of these data (Fang and Corso, 2007). Inadequate supervision was considered present if the respondent had been left alone more than 5 times when an adult should have been present, and physical neglect was considered present if the respondent did not have his/her basic needs met at least once. Physical abuse included being slapped, hit, or kicked more than 5 times. Sexual abuse was defined as being forced to have sexual relations or being touched or being forced to touch in a sexual way at least once.
Analysis
Descriptive statistics were calculated by sex. Differences in study variables by sex were examined using t-tests and Chi-square tests. Restricted cubic spline functions (Desquilbet and Mariotti, 2010) were used to examine whether the victimization score, the perpetration score, neighborhood poverty, and the measures of respondent and parental educational attainment were linearly associated with CVD risk. All were determined to be linear associations with the exception of neighborhood poverty. A quadratic term for this variable was included in subsequent regression models.
The relationship between IPV and CVD risk was tested with linear regression models adjusted for sex, race/ethnicity, and wave 3 age, respondent educational attainment, financial stress, and child maltreatment and wave 1 indicators of parental education and neighborhood poverty. Separate models were computed using the victimization score and the perpetration score. To assess whether IPV differentially predicted CVD risk by the type of IPV exposure (i.e. victimization only, perpetration only, and bi-directional violence), the model was re-run using the composite variable. A sex by IPV interaction term was tested in all models; none were detected (all p-values between ≥ 0.19).
All descriptive statistics and regression models incorporated survey design and unequal probability of selection per Add Health user guidance (Chantala and Tabor, 2010). Means, percents, and regression results reflect this weighting process. Multiple imputation was performed to address missing data which ranged from 0% to 5% for all variables except childhood neglect and parental educational attainment which had 6.64% and 13.18% missing values, respectively. In addition to the study variables, several auxiliary variables were included in the imputation process to improve power and reduce non-response bias (Enders, 2010) including individual CVD risk score components, exposure to other forms of interpersonal violence, depressive symptoms, family history of obesity, and whether the respondent was born in the United States. Twenty-five datasets were generated using PROC MI in SAS 9.3 and descriptive statistics and regression models were subsequently computed using SUDAAN 11.0. Analyses were finalized in November 2014.
Results
Table 1 indicates the socio-demographic characteristics of participants (4,472 men and 5,504 women) by sex. At wave 3, the sample was, on average, 21.82 (95% CI: 21.59, 22.06) years old and the participants were 67.07% White (n=5,533), 14.37% Black (n=1,907), 0.67% American Indian/Native American (n=66), 3.02% Asian/Pacific Islander (n=576), 3.40% Mixed (n=372), and 11.46% Hispanic (n=1,522). Mean 30-year CVD risk for the sample was 13.18% (95% CI: 12.71, 13.64) and was higher among men (Table 1). Overall, 39.84% (n=4,056) reported IPV exposure. Women were more likely to report any IPV exposure and more frequently reported perpetration only and a prior history of both victimization and perpetration. Women also had more years of education and were more likely to report financial stress, but were less likely than men to report being physically neglected as a child and were statistically, but not meaningfully, younger than the men in the sample.
Table 1.
Males (N=4,472) | Females (N=5,504) | p-value | |
---|---|---|---|
Age, Wave 1 mean (range) | 15.53 (11, 21) | 15.32 (11, 21) | <.01 |
Age, Wave 3 mean (range) | 21.92 (18, 27) | 21.72 (18, 27) | <.01 |
Age, Wave 4 mean (range) | 28.94 (25, 34) | 28.73 (24, 34) | <.01 |
Race/Ethnicity, Wave 3 n (%) | 0.88 | ||
White | 2,512 (66.99) | 3,021 (67.15) | |
Black | 764 (13.93) | 1,143 (14.81) | |
American Indian/Native American | 29 (0.65) | 37 (0.68) | |
Asian / Pacific Islander | 280 (3.12) | 296 (2.93) | |
Mixed | 171 (3.53) | 201 (3.28) | |
Hispanic | 716 (11.78) | 805 (11.15) | |
Years of education past 6th grade, Wave 3 mean (95% CI) | 6.98 (6.79, 7.18) | 7.26 (7.08, 7.45) | <.01 |
Financial stress, Wave 3 n (%) | 1,328 (29.73) | 1,951 (36.41) | <.01 |
Parental education, Wave 1 n (%)a | |||
Less than high school | 655 (15.01) | 959 (16.49) | 0.12 |
High school | 1290 (30.89) | 1619 (32.89) | |
Some college | 1353 (29.43) | 1566 (27.73) | |
College / university graduate | 1174 (24.66) | 1361 (22.88) | |
Neighborhood poverty, Wave 1 mean (95% CI) | 0.12 (0.10, 0.13) | 0.12 (0.10, 0.13) | 0.95 |
Child abuse and neglect, Wave 3 n (%) | |||
Inadequate supervision | 543 (11.46) | 587 (10.56) | 0.29 |
Physical neglect | 603 (14.09) | 488 (8.53) | <.01 |
Physical abuse | 424 (8.73) | 483 (8.56) | 0.85 |
Sexual abuse | 234 (5.52) | 289 (5.12) | 0.55 |
Victimization score, Wave 3 mean (95% CI) | 0.87 (0.79, 0.94) | 0.98 (0.91, 1.04) | Na |
Perpetration score, Wave 3 mean (95% CI) | 0.65 (0.59, 0.71) | 0.86 (0.80, 0.92) | Na |
Intimate partner violence by type, Wave 3 n (%) | <.01 | ||
None | 2982 (66.16) | 2938 (54.17) | |
Victimization only | 550 (12.54) | 448 (8.45) | |
Perpetration only | 217 (4.28) | 670 (11.58) | |
Both victimization and perpetration | 723 (17.02) | 1448 (25.80) | |
30-year CVD risk score, Wave 4 mean (95% CI) | 17.32 (16.74, 17.90) | 9.03 (8.64, 9.43) | <.01 |
Categorized for descriptive purposes.
The results of the regression analyses for IPV perpetration and IPV victimization are presented in Table 2. A one-standard deviation increase in victimization score was associated with a 0.28% increase in CVD risk score (95% CI: 0.03, 0.54). Similarly, a one standard deviation change in perpetration was associated with a 0.33% increase in the CVD risk score (95% CI: 0.03, 0.62). Male sex, Black race, older age, financial stress, higher neighborhood poverty, and physical neglect were also associated with higher long-term CVD risk. Conversely, Asian/Pacific Islanders and Hispanics and individuals with higher levels of education had lower risk of CVD. When categorized by type of exposure, all forms demonstrated increased CVD risk compared to those not exposed to IPV [victimization only: 0.62% (95% CI: −0.12,1.36); perpetration only: 0.76% (95% CI: −0.04, 1.57), both victimization and perpetration: 0.62% (95% CI: 0.01, 1.22)]; only prior exposure to both IPV types reached statistical significance (p<0.05).
Table 2.
Victimization | Perpetration | |||
---|---|---|---|---|
Beta (95% CI) | p-value | Beta (95% CI) | p-value | |
Violence score | 0.28 (0.03, 0.54) | 0.03 | 0.33 (0.03, 0.62) | 0.03 |
Sex | ||||
Male | 7.92 (7.49, 8.34) | <.01 | 7.96 (7.52, 8.39) | <.01 |
Female | Ref | |||
Age | 1.29 (1.16, 1.41) | <.01 | 1.29 (1.16, 1.41) | <.01 |
Race/Ethnicity | ||||
White | Ref | |||
Black | 0.80 (0.07, 1.53) | 0.03 | 0.75 (0.00, 1.50) | 0.05 |
American Indian/Native American | 3.22 (−1.11, 7.54) | 0.14 | 3.16 (−1.19, 7.50) | 0.15 |
Asian / Pacific Islander | −1.36 (−2.47, −0.24) | 0.02 | −1.37 (−2.48, −0.25) | 0.02 |
Mixed | 0.95 (−0.37, 2.28) | 0.16 | 0.98 (−0.34, 2.29) | 0.14 |
Hispanic | −1.06 (−1.76, −0.36) | <.01 | −1.09 (−1.79, −0.38) | <.01 |
Respondent education | −0.52 (−0.66, −0.38) | <.01 | −0.52 (−0.66, −0.37) | <.01 |
Financial stress | 1.09 (0.59, 1.60) | <.01 | 1.09 (0.60, 1.58) | <.01 |
Parental education | −0.10 (−0.21, 0.02) | 0.10 | −0.09 (−0.21, 0.02) | 0.11 |
Neighborhood poverty, per 10% change | 0.65 (0.17, 1.14) | 0.01 | 0.65 (0.17, 1.14) | 0.01 |
Neighborhood poverty quadratic term | −0.07 (−0.16, 0.01) | 0.09 | −0.07 (−0.16, 0.01) | 0.09 |
Child abuse and neglect | ||||
Inadequate supervision | 0.29 (−.40, 0.98) | 0.41 | 0.29 (−0.40, 0.98) | 0.41 |
Physical neglect | 0.97 (0.08, 1.86) | 0.03 | 0.95 (0.06, 1.84) | 0.04 |
Physical abuse | −0.31 (−1.03, 0.42) | 0.40 | −0.31 (−1.04, 0.42) | 0.40 |
Sexual abuse | 0.38 (−0.83, 1.59) | 0.54 | 0.30 (−0.89, 1.48) | 0.62 |
Note: Table presents results of linear regression models accounting for survey design and unequal probability of selection. Separate models were computed for victimization and perpetration and each was adjusted for the variables listed.
Discussion
This study indicates that recalled exposure to IPV in late adolescence and young adulthood is associated with increased risk of CVD 7 to 14 years post exposure. This association is consistent for perpetrators and victims of IPV and did not differ by sex. To our knowledge, this is the first study to investigate whether IPV experienced during adolescence or young adulthood predicts long-term CVD risk. The study’s contribution to the literature is strengthened by the use of a large, nationally representative sample with behavioral markers of IPV, an investigation of sex differences, and inclusion of victimization, perpetration, and exposure to both types of violence. Further, an objectively defined marker of long-term cardiovascular risk was used to simultaneously account for multiple risk behaviors and competing causes of death, making it a more realistic estimate of the future risk of CVD, a feature of particular importance to assessing CVD risk in younger adults.
Overall, individuals who reported exposure to IPV in late adolescence and young adulthood in this study have a higher risk for experiencing a CVD event in later adulthood compared to those not exposed to IPV. While the effect sizes are not large, the early detection of increased CVD risk in the present study is notable, especially given the young age at which it is being measured (average age 29) and is consistent with prior research indicating a positive relationship between IPV and self-reported diagnosis of CVD (Matthew J. Breiding et al., 2008; Coker et al., 2000b; Gass et al., 2010; Lown and Vega, 2001) and individual CVD risk factors (Clark et al., 2014a; Clark et al., forthcoming; Crane et al., 2013; Crane et al., 2014; Gass et al., 2010; Mason et al., 2012; Mason et al., 2013; Stene et al., 2013). Complex interrelationships among behavioral, psychological, physiological, and inter-relational mechanisms may undergird this association (Ehlert, 2013; Schnurr and Green, 2004; Scott-Storey, 2013; Taylor, 2010). IPV has been associated with smoking (Crane et al., 2013), weight promoting health behaviors (physical inactivity, poor diet, disordered eating) (Ackard and Neumark-Sztainer, 2002; Campbell, 2002; Heise and Garcia-Moreno, 2002; McNutt et al., 2002; Plichta, 2004), and IPV is bi-directionally associated with depressive symptoms (Campbell, 2002; Golding, 1999; Lehrer et al., 2006). Dysregulation following early adversity has been linked to alterations in inflammatory processes, neural regulation, and hypothalamic-pituitary-adrenal (HPA) and metabolic functioning (Bertone-Johnson et al., 2012; Danese and McEwen, 2012; Ehlert, 2013; Fagundes et al., 2013; Johnson et al., 2013; Taylor, 2010). Higher levels of C-reactive protein, a marker of inflammation, and an established risk factor for CVD (Ridker et al., 2000), have been found in adult victims of IPV compared to controls (Fernandez-Botran et al., 2011). Individuals exposed to IPV in adolescence also are at increased risk of later exposure to IPV (Gómez, 2010) and may be sensitized to develop depression subsequent to future stressors (Fogarty et al., 2008; Hammen et al., 2000; McLaughlin et al., 2010) via dysregulation of the HPA axis and persistent sensitization of the stress response (Heim et al., 2008).
The present study did not find bi-directionally violence to be especially cardiotoxic compared to victimization or perpetration only, but this may be due to the crude categorization of bi-directionally violence. A more nuanced examination of patterns of bi-directionally violent relationships is warranted to test for profiles that might be especially cardiotoxic and for gender and racial-ethnic differences given prior research finding Blacks to be at greater risk of being in a bi-directionally violent relationship (Caetano et al., 2005; Langhinrichsen-Rohling et al., 2012) compared to Whites and gender differences in types of perpetration and victimization (Black et al., 2011; Renner and Whitney, 2010; Spencer et al., 2015).
The study’s findings are tempered by several factors. Self-reports of IPV could not be confirmed because most incidents are not reported to verifiable sources such as the police (Coker et al., 2000a; Flicker et al., 2011; Tjaden and Thonnes, 2000) and reliance on formal reports underestimates the occurrence of violence. Recall may is minimized since assessment is at most 7 years from the encounter and the measure is behavior-based reducing the likelihood that events would be perceived differently as the participant matured. Social desirability bias is possible given the sensitive nature of the topic; however, prior research has found its impact on reports of IPV victimization and perpetration to be minimal (Fernandez-Gonzalez et al., 2013; Visschers et al., 2015). A limited number of items were used to measure IPV and individuals might be misclassified if they experienced alternative forms of violence. The study’s ability to detect different patterns of IPV experience may be limited by the presence of same-method variance since the same individual reported on their own and their partner’s behavior (Visschers et al., 2015). Also, this study did not examine psychological abuse and severe psychological abuse has been demonstrated to be a stronger predictor of incident hypertension (Mason et al., 2012) and diabetes (Mason et al., 2013) than physical and sexual IPV. Rasch modeling was used to better differentiate among individuals experiencing IPV, and took into consideration the respondent’s relationship history and salient features of these relationships; however, doing so might have masked potential gender differences in patterns of IPV exposure. Finally, the full complement of biomarkers needed to calculate the 30-year risk score was only available at wave 4, so change in long-term CVD risk relative to exposure could not be examined. However, prior research using Add Health data has found that exposure to IPV is associated with greater increases in BMI and greater likelihood of smoking, especially among women (Clark et al., 2014b; Exner-Cortens et al., 2013). Subsequent waves of Add Health data collection are needed to more elucidate this question.
Conclusion
Given the extent of IPV in late adolescence and young adulthood and its link to increased risk of the nation’s leading cause of death, much greater clinical effort is needed to prevent its occurrence. There is a growing awareness of the role of the health provider in violence prevention and the long term health implications of early adversity (Garner and Shonkoff, 2012; Johnson et al., 2013). Ignoring abuse history may compromise risk mitigation, if the underlying issues are not addressed (Edwards et al., 2007; Lopes et al., 2013). Guidance already exists to assist health care providers to educate, assess, and refer for violence (American Academy of Pediatrics, 2006; Moyer, 2013) and there are a number of primary care-based IPV interventions that improve patient well-being (Bair-Merritt et al., 2014) and growing guidance on how to build effective health care responses to IPV (Miller et al., 2015). While more evidence is needed on the link between IPV and CVD risk to inform clinical practice, the growing body of research suggests that addressing violence may improve the success of health promotion and maintenance efforts and stymy the erosion of health attributable to violence exposure.
ACKNOWLEDGEMENTS
This research uses data from Add Health, a program project directed by Kathleen Mullan Harris and designed by J. Richard Udry, Peter S. Bearman, and Kathleen Mullan Harris at the University of North Carolina at Chapel Hill, and funded by grant P01-HD31921 from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, with cooperative funding from 23 other federal agencies and foundations. Special acknowledgment is due Ronald R. Rindfuss and Barbara Entwisle for assistance in the original design. Information on how to obtain the Add Health data files is available on the Add Health website (http://www.cpc.unc.edu/addhealth). No direct support was received from grant P01-HD31921 for this analysis.
Funding Sources:
Dr. Cari Jo Clark was supported by National Center for Advancing Translational Sciences of the NIH Award Number 8UL1TR000114–02/ KL2TR000113 and grant number R03HD068045 from the Eunice Kennedy Shriver National Institute of Child Health and Human Development. Additional support was provided by the Program in Health Disparities Research and the Applied Clinical Research Program at the University of Minnesota. Dr. Susan A. Everson-Rose was supported in part by grant 1P60MD003422 from the National Institute on Minority Health and Health Disparities and by the Program in Health Disparities Research and the Applied Clinical Research Program at the University of Minnesota. Study sponsors had no role in study design; collection, analysis, or interpretation of data; writing the report; or the decision to submit the report for publication. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
Footnotes
Conflict of Interest Statement: The authors declare that there are no conflicts of interest.
Contributor Information
Cari Jo Clark, Division of Epidemiology and Community Health, Program in Health Disparities Research, University of Minnesota, 717 Delaware Street, SE, Ste 166 Minneapolis, MN 55414, United States.
Alvaro Alonso, Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN
Susan A. Everson-Rose, Department of Medicine, Program in Health Disparities Research and Center for Health Equity, University of Minnesota, Minneapolis, MN
Rachael A. Spencer, Independent Gender Based Violence Specialist, Atlanta, GA
Sonya S. Brady, Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN
Michael D. Resnick, Department of Pediatrics, University of Minnesota, Minneapolis, MN.
Iris W. Borowsky, Department of Pediatrics, University of Minnesota, Minneapolis, MN
John E. Connett, Division of Biostatistics, Biostatistical Design and Analysis Center, University of Minnesota, Minneapolis, MN
Robert F. Krueger, Department of Psychology, University of Minnesota, Minneapolis, MN
Viann N. Nguyen-Feng, Department of Psychology, University of Minnesota, Minneapolis, MN
Steven L. Feng, Department of Internal Medicine, Hennepin County Medical Center, Minneapolis, MN
Shakira F. Suglia, Department of Epidemiology, Columbia University, New York, NY
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