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Association between women’s exposure to intimate partner violence and self-reported health outcomes in New Zealand Brooklyn M. Mellar, Ladan Hashemi, Vanessa Selak, Pauline J. Gulliver, Tracey K.D. McIntosh and Janet L. Fanslow

By: Mellar, Brooklyn M.
Contributor(s): Hashemi, Ladan | Selak, Vanessa | Gulliver, Pauline | McIntosh, Tracey | Fanslow, Janet L.
Material type: materialTypeLabelArticleSeries: JAMA Network Open.Publisher: JAMA Network, 2023Subject(s): ABUSED WOMEN | COERCIVE CONTROL | DOMESTIC VIOLENCE | ECONOMIC ABUSE | HEALTH | INTIMATE PARTNER VIOLENCE | PHYSICAL ABUSE | RISK FACTORS | SEXUAL VIOLENCE | SURVEYS | 2019 NZ Family Violence Study | He Koiora Matapopore | VICTIMS OF DOMESTIC VIOLENCE | NEW ZEALANDOnline resources: DOI: 10.1001/jamanetworkopen.2023.1311 (Open access) | Read article in The Conversation, 4/3/2023 | Read media release (4/3/2023) In: JAMA Network Open, 2023, 6(3): e231311Summary: Importance Intimate partner violence (IPV) is increasingly recognized as a contributing factor for long-term health problems; however, few studies have assessed these health outcomes using consistent and comprehensive IPV measures or representative population-based samples. Objective To examine associations between women’s lifetime IPV exposure and self-reported health outcomes. Design, Setting, and Participants The cross-sectional, retrospective 2019 New Zealand Family Violence Study, adapted from the World Health Organization’s Multi-Country Study on Violence Against Women, assessed data from 1431 ever-partnered women (63.7% of eligible women contacted) in New Zealand. The survey was conducted from March 2017 to March 2019, across 3 regions, which accounted for approximately 40% of the New Zealand population. Data analysis was performed from March to June 2022. Exposures Exposures were lifetime IPV by types (physical [severe/any], sexual, psychological, controlling behaviors, and economic abuse), any IPV (at least 1 type), and number of IPV types. Main Outcomes and Measures Outcome measures were poor general health, recent pain or discomfort, recent pain medication use, frequent pain medication use, recent health care consultation, any diagnosed physical health condition, and any diagnosed mental health condition. Weighted proportions were used to describe the prevalence of IPV by sociodemographic characteristics; bivariate and multivariable logistic regressions were used for the odds of experiencing health outcomes by IPV exposure. Results The sample comprised 1431 ever-partnered women (mean [SD] age, 52.2 [17.1] years). The sample was closely comparable with New Zealand’s ethnic and area deprivation composition, although younger women were slightly underrepresented. More than half of the women (54.7%) reported any lifetime IPV exposure, of whom 58.8% experienced 2 or more IPV types. Compared with all other sociodemographic subgroups, women who reported food insecurity had the highest IPV prevalence for any IPV (69.9%) and all specific types. Exposure to any IPV and specific IPV types was significantly associated with increased likelihood of reporting adverse health outcomes. Compared with those unexposed to IPV, women who experienced any IPV were more likely to report poor general health (adjusted odds ratio [AOR], 2.02; 95% CI, 1.46-2.78), recent pain or discomfort (AOR, 1.81; 95% CI, 1.34-2.46), recent health care consultation (AOR, 1.29; 95% CI, 1.01-1.65), any diagnosed physical health condition (AOR, 1.49; 95% CI, 1.13-1.96), and any mental health condition (AOR, 2.78; 95% CI, 2.05-3.77). Findings suggested a cumulative or dose-response association because women who experienced multiple IPV types were more likely to report poorer health outcomes. Conclusions and Relevance In this cross-sectional study of women in New Zealand, IPV exposure was prevalent and associated with an increased likelihood of experiencing adverse health. Health care systems need to be mobilized to address IPV as a priority health issue. (Authors' abstract). Record #8023
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JAMA Network Open, 2023, 6(3): e231311

Importance Intimate partner violence (IPV) is increasingly recognized as a contributing factor for long-term health problems; however, few studies have assessed these health outcomes using consistent and comprehensive IPV measures or representative population-based samples.

Objective To examine associations between women’s lifetime IPV exposure and self-reported health outcomes.

Design, Setting, and Participants The cross-sectional, retrospective 2019 New Zealand Family Violence Study, adapted from the World Health Organization’s Multi-Country Study on Violence Against Women, assessed data from 1431 ever-partnered women (63.7% of eligible women contacted) in New Zealand. The survey was conducted from March 2017 to March 2019, across 3 regions, which accounted for approximately 40% of the New Zealand population. Data analysis was performed from March to June 2022.

Exposures Exposures were lifetime IPV by types (physical [severe/any], sexual, psychological, controlling behaviors, and economic abuse), any IPV (at least 1 type), and number of IPV types.

Main Outcomes and Measures Outcome measures were poor general health, recent pain or discomfort, recent pain medication use, frequent pain medication use, recent health care consultation, any diagnosed physical health condition, and any diagnosed mental health condition. Weighted proportions were used to describe the prevalence of IPV by sociodemographic characteristics; bivariate and multivariable logistic regressions were used for the odds of experiencing health outcomes by IPV exposure.

Results The sample comprised 1431 ever-partnered women (mean [SD] age, 52.2 [17.1] years). The sample was closely comparable with New Zealand’s ethnic and area deprivation composition, although younger women were slightly underrepresented. More than half of the women (54.7%) reported any lifetime IPV exposure, of whom 58.8% experienced 2 or more IPV types. Compared with all other sociodemographic subgroups, women who reported food insecurity had the highest IPV prevalence for any IPV (69.9%) and all specific types. Exposure to any IPV and specific IPV types was significantly associated with increased likelihood of reporting adverse health outcomes. Compared with those unexposed to IPV, women who experienced any IPV were more likely to report poor general health (adjusted odds ratio [AOR], 2.02; 95% CI, 1.46-2.78), recent pain or discomfort (AOR, 1.81; 95% CI, 1.34-2.46), recent health care consultation (AOR, 1.29; 95% CI, 1.01-1.65), any diagnosed physical health condition (AOR, 1.49; 95% CI, 1.13-1.96), and any mental health condition (AOR, 2.78; 95% CI, 2.05-3.77). Findings suggested a cumulative or dose-response association because women who experienced multiple IPV types were more likely to report poorer health outcomes.

Conclusions and Relevance In this cross-sectional study of women in New Zealand, IPV exposure was prevalent and associated with an increased likelihood of experiencing adverse health. Health care systems need to be mobilized to address IPV as a priority health issue. (Authors' abstract). Record #8023