A decade-long public health study tracking more than 100,000 ever-partnered Peruvian women has revealed a profound and persistent link between intimate partner violence (IPV) and clinically relevant depressive symptoms. Published in Frontiers in Psychology, the comprehensive research utilizes data drawn from ten consecutive iterations of the Peruvian Demographic and Family Health Survey (ENDES) between 2015 and 2024. The findings underline a critical intersection of gender-based violence and mental health challenges across diverse socio-economic strata, reinforcing the urgent need for integrated, confidential healthcare responses.

Scope and Methodology of the Decade-Long Analysis

Led by researchers examining national trends across Peru, the repeated cross-sectional study analyzed data from 101,145 ever-partnered women aged 15 to 49 years. The primary objective was to evaluate the national prevalence of depressive symptoms, measure their association with various forms of IPV, and assess temporal variations across distinct social epochs—specifically the pre-pandemic era, the peak COVID-19 disruption period, and the post-acute recovery phase.

To capture depressive symptoms accurately, researchers utilized the nine-item Patient Health Questionnaire (PHQ-9), applying a standard threshold score of 10 or higher to identify moderate-to-severe symptom severity. Information regarding emotional, physical, and sexual violence was gathered through standardized domestic violence modules administered under strict privacy protocols by the National Institute of Statistics and Informatics of Peru (INEI). Using survey-weighted modified Poisson regression models with robust variance, the research team adjusted for a wide array of structural, demographic, and contextual variables, including age, education, geographical region, household wealth, and partner alcohol consumption.

Key Findings: Prevalence Rates and Strong Associations

The analysis revealed that 35.3% of the weighted sample reported experiencing at least one form of intimate partner violence. Breaking down the figures by type, 28.0% of women reported physical IPV, 24.5% reported emotional IPV, and 6.1% reported sexual IPV. Meanwhile, the overall weighted prevalence of clinically relevant depressive symptoms stood at 7.1%.

When examining the direct relationship between abuse and mental health, the data showed that women exposed to any form of IPV faced more than double the adjusted prevalence of depressive symptoms compared to their unexposed peers (adjusted Prevalence Ratio [aPR]: 2.37; 95% CI: 2.18–2.58). Notably, emotional IPV demonstrated an impact nearly identical in magnitude to physical abuse, recording an aPR of 2.32. Physical IPV yielded an aPR of 2.21, while sexual IPV recorded an aPR of 1.97.

These consistent associations highlight that psychological and emotional abuse—often less visible in standard clinical settings—carries a heavy psychological toll that rivals physical trauma.

Temporal Fluctuations and Pandemic Impacts

Over the ten-year observation window, the prevalence of depressive symptoms displayed a non-monotonic annual pattern, characterized by an overall relative annual increase of +2.31%. Symptoms dipped to 5.7% in 2020 before climbing to 8.4% by 2023 and remaining elevated at 8.2% in 2024.

Crucially, the magnitude of the association between IPV and depressive symptoms shifted across the defined study periods. During the pre-pandemic years of 2015–2019, the adjusted prevalence ratio stood at 2.72. However, during the height of pandemic-related restrictions in 2020–2021, the relative association dropped to 1.77, before rebounding to 2.29 in the post-acute period of 2022–2024.

Public health analysts attribute this mid-pandemic dip not to a sudden reduction in the psychological harm caused by abuse, but rather to broader systemic factors. Widespread psychological distress among women without reported IPV during strict lockdowns temporarily narrowed the statistical contrast between exposed and unexposed groups. Additionally, modifications in survey collection methods—such as the implementation of telephone interviews—may have temporarily altered reporting dynamics and household privacy conditions.

Broader Implications for Policy and Healthcare Systems

The study’s authors emphasize that while the findings establish a robust statistical co-occurrence between IPV and depressive symptoms, the cross-sectional design prevents definitive claims of causality. Nonetheless, the population-based benchmarks provide crucial guidance for health authorities and policymakers striving to meet Sustainable Development Goal 3 (Good Health and Well-being).

Experts note that the data strongly advocate for systemic reforms within primary healthcare facilities. Because women experiencing domestic abuse frequently present in clinical settings with somatic complaints or psychological distress rather than direct disclosures of violence, integrated screening protocols are vital. Public health advocates suggest that routine, confidential mental health assessments should be paired with secure referral pathways for gender-based violence support services.

At the same time, researchers caution against treating these observational results as proof that universal screening alone solves the crisis. Safe implementation requires rigorous staff training, guaranteed patient confidentiality, and adherence to trauma-informed care standards to prevent placing victims at heightened risk of retaliation.

As Peru and the broader Latin American region continue to navigate the lingering social and economic aftershocks of the pandemic, this decade-long surveillance underscores that addressing mental health vulnerability requires dismantling the structural drivers of intimate partner violence.