Community activism as a strategy to reduce intimate partner violence (IPV) in rural Rwanda: Results of a community randomised trial

Systematic review and data synthesis on the treatment of sexual violence victimization by an intimate partner

This study aims to conduct a systematic review and synthesis on the treatment of sexual violence victimization by an intimate partner evaluating specifically the impact of treatment on mental health outcomes of female sexual intimate partner violence (IPV) survivors. We followed the Cochrane Handbook for Systemic Reviews of Interventions guidelines for the process of conducting systematic reviews. We were unable to conduct meta-analyses due to the substantial heterogeneity of the interventions for IPV. A qualitative summary of 6 controlled studies identified no benefit to the treatment of sexual coercion, posttraumatic stress disorder, depression, or anxiety for female sexual IPV survivors. However, we are limited by a paucity of data for each outcome on this subject. In conclusion, sexual coercion is a complex issue that has adverse effects on mental health and the well-being of the survivors. More research is needed that investigates what kind of interventions are effective for this specific population.

Do Gender-Based Violence Interventions Consider the Impacts of Climate Change? A Systematic Review

Climate change and extreme weather events have been shown to increase incidences of gender-based violence (GBV). Numerous organizations have devoted significant time, resources, and effort to the design and implementation of interventions aimed at reducing GBV in Africa. Some interventions effectively reduce violence, but GBV persists and remains pervasive. The United Nations has called for GBV interventions that consider the impact of climate change on violence. This review aims to determine whether public health interventions intended to reduce GBV in Africa take into account the effects of climate change on the region and the population. PubMed, PsychArticles, and CINAHL databases were searched systematically in February 2023 for interventions conducted in Africa published between 2010 and 2023. There were a total of 86 articles in the final review that described 40 distinct interventions. The intervention designs included empowerment and participatory approaches (microfinance, microfinance plus, community education, and community engagement), changing social and cultural norms (community education, community engagement, and media), and school-based programs. None of the 40 interventions mentioned climate, weather, or climate change as a component of the intervention. There are several opportunities to improve existing, successful GBV interventions in order to increase their efficacy. GBV interventions could incorporate economic independence programs that do not rely on agriculture and include climate change education. These findings could facilitate the integration of two previously distinct research disciplines-climate change and GBV prevention-to inform future research and develop more effective and cost-efficient interventions.

Effectiveness of community mobilisation and group-based interventions for preventing intimate partner violence against women in low- and middle-income countries: A systematic review and meta-analysis

Background

Intimate partner violence (IPV) is a challenge affecting one in three women in their lifetime, and gender-transformative interventions have been identified as a promising prevention strategy. We systematically reviewed and meta-analysed randomised controlled trials (RCTs) of community-level or group-based interventions to prevent IPV in lower- and middle-income countries, seeking to answer the following research question: do community- or group-based gender-transformative interventions reduce IPV, compared to a control arm of status-quo programming?

Methods

We conducted a systematic search from the inception of all databases employed until 20 July 2021. Eligible study outcomes included past-year experience of physical, sexual, emotional or economic IPV self-reported by women and perpetration of physical or sexual IPV self-reported by men. We assessed study risk of bias using the updated Cochrane tool for RCTs. We estimated the pooled odds ratio (OR) using a multilevel random-effects meta-analysis and also conducted a multilevel meta-regression to analyse how study characteristics moderated the effect size.

Results

After screening 7363 unique records, we included 30 studies on 27 unique RCTs. Our meta-analysis suggested that community-level or group-based interventions reduced the odds of women experiencing IPV in the past year: pooled adjusted odds ratio (aOR) = 0.78; 95% confidence interval (CI) = 0.63-0.97. While there was significant heterogeneity in the effect sizes between trials (I2 = 83%), potentially reflecting the diverse contexts of the included trials, our meta-regression did not indicate a significant association between intervention effectiveness and intervention type or target population. There was evidence of significant associations between effectiveness and intervention components and duration.

Discussion

There is strong evidence that community-level and group-based interventions reduce IPV against women. Unpacking what intervention modalities are effective in which contexts can further inform prevention strategies.

Registration

PROSPERO (CRD42021290193).

Prevention of Perpetration of Intimate Partner Violence by Men and Boys in Low- and Middle-Income Countries: A Scoping Review of Primary Prevention Interventions

Intimate partner violence (IPV) affects the health of women across the globe, with the greatest burden encountered by women in low- and middle-income countries (LMICs). This scoping review aims to summarize and critically examine primary prevention interventions addressing IPV perpetration by men and boys in LMICs and identify gaps in the evidence base. PubMed, EMbase, and PsychINFO were searched for articles published between January 2001 and October 2020 that examined the efficacy of primary prevention interventions to prevent IPV perpetration by men/boys in LMICs and reported on a quantitative outcome examining IPV perpetration. Data on study population, setting and design, intervention components, evaluation methods, and outcomes were extracted, and study quality was assessed using the Effective Public Health Practice Project tool. Of 8,392 articles, 16 intervention studies met inclusion criteria. All 16 were of moderate or weak quality. The majority were conducted in Africa, delivered by peers, theoretically grounded, and included content to challenge IPV acceptance and gender norms. Half demonstrated intervention efficacy in prevention of IPV perpetration; these studies tended to intervene at multiple levels of the Socio-Ecological Model, be delivered over a minimum of eight sessions, and utilize a validated IPV measure to assess intervention impact. In conclusion, the field of IPV perpetration prevention research in LMICs is rapidly evolving, with many interventions demonstrating promise. Future intervention studies should consider expanding to LMICs outside Africa, targeting school-age youth, exploring whether shorter intervention durations are effective, and addressing the methodological shortcomings noted in the quality assessment.

A Systematic Review of Interventions to Reduce Gender-Based Violence Among Women and Girls in Sub-Saharan Africa

Sub-Saharan Africa (SSA) is disproportionately affected by gender-based violence (GBV). We systematically reviewed English language, peer-reviewed, quantitative evaluations of interventions to reduce violence against women and girls (VAWG) in SSA that involved a comparison group and reported GBV incidence, or GBV-related attitudes, norms and symptoms as an outcome. We identified 53 studies published between January 2000 and April 2020 and classified these programmes from an empowerment perspective using the following categories: social, economic, combined social and economic and psychological empowerment interventions. Our review found social empowerment interventions effective for transforming gender attitudes and norms and reducing GBV, and psychological empowerment interventions effective for managing GBV-related symptoms. The evidence for economic empowerment interventions was equivocal. Key elements of successful interventions included participatory group learning, engaging male partners, engaging the community, longer duration and utilising existing platforms. Promising approaches for further research included gender specific programmes, psychological empowerment interventions delivered by lay workers and psychological empowerment interventions focused on GBV reduction.

Pooled analysis of the association between food insecurity and violence against women: Evidence from low- and middle-income settings

Background

Intimate partner violence impacts relationships across the socioeconomic spectrum, nonetheless its prevalence is reported to be highest in areas that are most socio-economically deprived. Poverty has direct and indirect impacts on intimate partner violence (IPV) risk, however, one of the postulated pathways is through food insecurity. The aim of this paper is to describe the association between food insecurity (household hunger) and women's experiences, and men's perpetration, of intimate partner violence and non-partner sexual violence in data from Africa and Asia.

Methods

We conducted a pooled analysis of data from baseline interviews with men and women participating in six Violence Against Women prevention intervention evaluations and present a meta-analysis using mixed-effects Poisson regression models. Data were from South Africa (two studies), Ghana, Rwanda (two data sets), and Afghanistan and comprised interviews with 6545 adult women and 8104 adult men. We assessed food insecurity with the Household Hunger Scale.

Results

Overall, 27.9% of women experienced moderate food insecurity (range from 11.1% to 44.4%), while 28.8% of women reported severe food insecurity (range from 7.1 to 54.7%). Overall food insecurity was associated with an increased likelihood of women experiencing physical intimate partner violence, adjusted incidence rate ratio (aIRR) = 1.40 (95% CI = 1.23 to 1.60) for moderate food insecurity and aIRR = 1.73 (95% CI = 1.41 to 2.12) for severe food insecurity. It was also associated with an increased likelihood of men reporting perpetration of physical IPV, with aIRR = 1.24 (95% CI = 1.11 to 1.39) for moderate food insecurity and aIRR = 1.18 (95% CI = 1.02 to 1.37) for severe food insecurity. Food insecurity was not significantly associated with women's experience of non-partner sexual violence, aIRR = 1.27 (95% CI = 0.93 to 1.74) for moderate or severe food insecurity vs none, nor men's perpetration of non-partner sexual violence aIRR = 1.02 (95% CI = 0.90 to 1.15).

Conclusions

Food insecurity is associated with increased physical intimate partner violence perpetration and experience reported by men and women. It was not associated with non-partner sexual violence perpetration, although there was some evidence to suggest an elevated risk of non-partner sexual violence among food-insecure women. Prevention programming needs to embrace food insecurity as a driver of intimate partner violence perpetration, however, non-partner sexual violence prevention needs to be shaped around a separate understanding of its drivers.

'Our courage has grown': a grounded theory study of enablers and barriers to community action to address violence against women in urban India

Transforming communities into supportive environments for women facing risks of violence requires community members to play an active role in addressing violence against women (VAW). We did a grounded theory study of enablers and barriers to community response to ongoing violence, sampling from programme areas of a non-governmental organisation (NGO)-led community mobilisation intervention in informal settlements in Mumbai, India. We held 27 focus group discussions and 31 semistructured interviews with 113 community members and 9 NGO staff, along with over 170 hours of field observation. We found that residents responded to violence in diverse ways, ranging from suicide prevention to couple mediation to police and NGO referral. Enabling and constraining factors fit into a social ecological model containing intrapersonal, immediate social network, and wider societal levels. We identified four themes interlinking factors: legitimacy of action, collective power, protection against risk and informal leadership. Legitimacy of action was negotiated in the context of individual disputes, making community members question not only whether VAW was 'wrong', but who was 'wrong' in specific disputes. Collective power through neighbourhood solidarity was key to action but could be curtailed by violent gang crime. Interveners in incidents of VAW turned out to need significant physical, social and legal protection against reprisal. However, repeat interveners could become informal leaders wielding influential prosocial reputations that incentivised and facilitated action. Our model integrates multiple perspectives on community action into one analytical framework, which can be used by implementers to ensure that community members receive encouragement, support and protection to act.

A summative content analysis of how programmes to improve the right to sexual and reproductive health address power

INTRODUCTION

Power shapes all aspects of global health. The concept of power is not only useful in understanding the current situation, but it is also regularly mobilised in programmatic efforts that seek to change power relations. This paper uses summative content analysis to describe how sexual and reproductive health (SRH) programmes in low-income and middle-income countries explicitly and implicitly aim to alter relations of power.

METHODS

Content analysis is a qualitative approach to analysing textual data; in our analysis, peer-reviewed articles that describe programmes aiming to alter power relations to improve SRH constituted the data. We searched three databases, ultimately including 108 articles. We extracted the articles into a spreadsheet that included basic details about the paper and the programme, including what level of the social ecological model programme activities addressed.

RESULTS

The programmes reviewed reflect a diversity of priorities and approaches to addressing power, though most papers were largely based in a biomedical framework. Most programmes intervened at multiple levels simultaneously; some of these were 'structural' programmes that explicitly aimed to shift power relations, others addressed multiple levels using a more typical programme theory that sought to change individual behaviours and proximate drivers. This prevailing focus on proximate behaviours is somewhat mismatched with the broader literature on the power-related drivers of SRH health inequities, which explores the role of embedded norms and structures.

CONCLUSION

This paper adds value by summarising what the academic public health community has chosen to test and research in terms of power relations and SRH, and by raising questions about how this corresponds to the significant task of effecting change in power relations to improve the right to SRH.

Prevention of violence against women and girls: A cost-effectiveness study across 6 low- and middle-income countries

BACKGROUND

Violence against women and girls (VAWG) is a human rights violation with social, economic, and health consequences for survivors, perpetrators, and society. Robust evidence on economic, social, and health impact, plus the cost of delivery of VAWG prevention, is critical to making the case for investment, particularly in low- and middle-income countries (LMICs) where health sector resources are highly constrained. We report on the costs and health impact of VAWG prevention in 6 countries.

METHODS AND FINDINGS

We conducted a trial-based cost-effectiveness analysis of VAWG prevention interventions using primary data from 5 randomised controlled trials (RCTs) in sub-Saharan Africa and 1 in South Asia. We evaluated 2 school-based interventions aimed at adolescents (11 to 14 years old) and 2 workshop-based (small group or one to one) interventions, 1 community-based intervention, and 1 combined small group and community-based programme all aimed at adult men and women (18+ years old). All interventions were delivered between 2015 and 2018 and were compared to a do-nothing scenario, except for one of the school-based interventions (government-mandated programme) and for the combined intervention (access to financial services in small groups). We computed the health burden from VAWG with disability-adjusted life year (DALY). We estimated per capita DALYs averted using statistical models that reflect each trial's design and any baseline imbalances. We report cost-effectiveness as cost per DALY averted and characterise uncertainty in the estimates with probabilistic sensitivity analysis (PSA) and cost-effectiveness acceptability curves (CEACs), which show the probability of cost-effectiveness at different thresholds. We report a subgroup analysis of the small group component of the combined intervention and no other subgroup analysis. We also report an impact inventory to illustrate interventions' socioeconomic impact beyond health. We use a 3% discount rate for investment costs and a 1-year time horizon, assuming no effects post the intervention period. From a health sector perspective, the cost per DALY averted varies between US$222 (2018), for an established gender attitudes and harmful social norms change community-based intervention in Ghana, to US$17,548 (2018) for a livelihoods intervention in South Africa. Taking a societal perspective and including wider economic impact improves the cost-effectiveness of some interventions but reduces others. For example, interventions with positive economic impacts, often those with explicit economic goals, offset implementation costs and achieve more favourable cost-effectiveness ratios. Results are robust to sensitivity analyses. Our DALYs include a subset of the health consequences of VAWG exposure; we assume no mortality impact from any of the health consequences included in the DALYs calculations. In both cases, we may be underestimating overall health impact. We also do not report on participants' health costs.

CONCLUSIONS

We demonstrate that investment in established community-based VAWG prevention interventions can improve population health in LMICs, even within highly constrained health budgets. However, several VAWG prevention interventions require further modification to achieve affordability and cost-effectiveness at scale. Broadening the range of social, health, and economic outcomes captured in future cost-effectiveness assessments remains critical to justifying the investment urgently required to prevent VAWG globally.

Strengthening women's empowerment and gender equality in fragile contexts towards peaceful and inclusive societies: A systematic review and meta-analysis

BACKGROUND

Across the globe, gender disparities still exist with regard to equitable access to resources, participation in decision-making processes, and gender and sexual-based violence. This is particularly true in fragile and conflict-affected settings, where women and girls are affected by both fragility and conflict in unique ways. While women have been acknowledged as key actors in peace processes and post-conflict reconstruction (e.g., through the United Nations Security Council Resolution 1325 and the Women, Peace and Security Agenda) evidence on the effectiveness of gender-specific and gender-transformative interventions to improve women's empowerment in fragile and conflict-affected states and situations (FCAS) remains understudied.

OBJECTIVES

The purpose of this review was to synthesize the body of evidence around gender-specific and gender-transformative interventions aimed at improving women's empowerment in fragile and conflict-affected settings with high levels of gender inequality. We also aimed to identify barriers and facilitators that could affect the effectiveness of these interventions and to provide implications for policy, practice and research designs within the field of transitional aid.

METHODS

We searched for and screened over 100,000 experimental and quasi-experimental studies focused on FCAS at the individual and community levels. We used standard methodological procedures outlined by the Campbell Collaboration for the data collection and analysis, including quantitative and qualitative analyses, and completed the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) methodology to assess the certainty around each body of evidence.

RESULTS

We identified 104 impact evaluations (75% randomised controlled trials) assessing the effects of 14 different types of interventions in FCAS. About 28% of included studies were assessed as having a high risk of bias (45% among quasi-experimental designs). Interventions supporting women's empowerment and gender equality in FCAS produced positive effects on the outcomes related to the primary focus of the intervention. There are no significant negative effects of any included interventions. However, we observe smaller effects on behavioural outcomes further along the causal chain of empowerment. Qualitative syntheses indicated that gender norms and practices are potential barriers to intervention effectiveness, while working with local powers and institutions can facilitate the uptake and legitimacy of interventions.

CONCLUSIONS

We observe gaps of rigorous evidence in certain regions (notably MENA and Latin America) and in interventions specifically targeting women as actors of peacebuilding. Gender norms and practices are important elements to consider in programme design and implementation to maximise potential benefits: focusing on empowerment only might not be enough in the absence of targeting the restrictive gender norms and practices that may undermine intervention effectiveness. Lastly, programme designers and implementation should consider explicitly targeting specific empowerment outcomes, promoting social capital and exchange, and tailoring the intervention components to the desired empowerment-related outcomes.

A case study comparison of engaging community activists to prevent gender-based violence in Peru and Rwanda

Community mobilisation is recognised as an important strategy to shift inequitable gender norms and ensure an enabling environment to prevent gender-based violence (GBV). Yet there is a need to better understand the factors that facilitate effective community activism in particular contexts. Although fundamental to the success of mobilisation programmes, there is also limited appreciation of the experiences and agency of engaged community activists. This paper draws on qualitative evaluations from two community mobilisation GBV prevention programmes: the Gender Violence in the Amazon of Peru (GAP) Project and the Indashyikirwa programme in Rwanda. In Peru, participatory data was collected, in addition to baseline and endline interviews with 8 activists. In Rwanda, baseline and endline interviews and observations were conducted with 12 activists, and interviews were conducted with 8 staff members. The data was thematically analysed, and a comparative case study approach was applied to both data sets. The comparative study identified similar programmatic aspects that could hinder or enable activist's engagement and development, and how these are embedded within contextual social and structural factors. We discuss these insights in reference to the current emphasis in public health on individualistic programming, with insufficient attention to how wider environments influence violence prevention programming.

Social and Psychological Readiness to Take Collective Action Against Violence Against Women: A Mixed Methods Study of Informal Settlements in Mumbai, India

Past failures to mobilize communities in collective action against violence against women (VAW) have been ascribed to contextual challenges, but researchers have not systematically mapped community capacity for collective action against VAW. We conducted a mixed methods study in Mumbai, India using quantitative data from a household survey (n = 2,642) and qualitative data from 264 community meetings. We found attitudes supporting gender inequality and violence coexisted with significant enthusiasm and support for collective action against VAW. These findings open up avenues for policymakers to treat communities as less vulnerable and more capable of changing situations and problems that affect them.

The Intersection of Inequitable Gender Norm Endorsement and HIV Stigma: Implications for HIV Care Engagement for Men in Ugandan Fishing Communities

Men's engagement in the HIV care continuum may be negatively affected by adherence to inequitable gender norms, which may be exacerbated by HIV stigma. This cross-sectional study with 300 male fisherfolk in Uganda examined the independent and interacting effects of inequitable gender norm endorsement and HIV stigma on men's missed HIV care appointments and missed antiretroviral (ARV) doses. Greater gender inequitable norm endorsement was associated with increased odds of missed HIV clinic visits (adjusted odds ratio [AOR)] 1.44, 95% CI 1.16-1.78) and a statistically significant interaction between internalized HIV stigma and inequitable gender norms on missed ARV doses was identified (AOR 5.32, 95% CI 2.60-10.86). Adherence to traditional gender norms reduces men's HIV appointment attendance, and among men with high internalized stigma, increases the likelihood of poor treatment adherence. These findings point to the need for HIV interventions that reconfigure harmful gender norms with a focus on stigma reduction.

Community-level spillover effects of an intervention to prevent intimate partner violence and HIV transmission in rural Ethiopia

Background

Intimate partner violence (IPV) is associated with adverse health and psychosocial outcomes. We analysed the spillover effects of Unite for a Better Life (UBL), an intervention evaluated in a cluster randomised controlled trial using a double-randomised design; previous evidence suggests UBL reduced IPV in rural Ethiopia among direct beneficiaries.

Methods

Villages (n=64) were randomly allocated to control, or to receive UBL delivered to men, women or couples. Each cluster comprised 106 surveyed households, including 21 randomly selected indirect beneficiary households who were not included in the intervention. Primary and secondary IPV outcomes included women’s experience and men’s perpetration of past-year physical or sexual IPV 24 months postintervention. An intention-to-treat analysis was conducted comparing indirect beneficiaries to sampled households in control communities. The analysis includes 2516 households surveyed at baseline in 2014–2015 (1680 households in the control arm, 258 indirect beneficiary households in the couples’ arm, 287 indirect beneficiary households in the women’s arm and 291 indirect beneficiary households in the men’s arm). Follow-up data were available from 88% of baseline respondents and 86% of baseline spouses surveyed in 2017–2018, a total of 4379 individuals.

Results

Among indirect beneficiaries, there was no statistically significant intervention effect on women’s past-year experience of physical or sexual IPV, while men’s UBL significantly reduced reported perpetration of past-year sexual IPV (Adjusted Odds Ratio: 0.55; 95% CI 0.38 to 0.80, p=0.002). The intervention effects among indirect beneficiaries were statistically similar to those reported for the direct beneficiaries. In general, the hypothesis of equal effects cannot be rejected.

Conclusion

A gender-transformative intervention delivered to men was effective in reducing reported IPV even among indirect beneficiaries, suggesting that the programme had positive spillover effects in diffusing information and changing behaviours within the broader community.

Trial registration numbers

NCT02311699 and American Economic Association Registry (AEARCTR-0000211).

Effective prevention of intimate partner violence through couples training: a randomised controlled trial of Indashyikirwa in Rwanda

Background

Between 2015 and 2018, three civil society organisations in Rwanda implemented Indashyikirwa, a four-part intervention designed to reduce intimate partner violence (IPV) among couples and within communities. We assessed the impact of the programme’s gender transformative curriculum for couples.

Methods

Sectors (n=28) were purposively selected based on density of village savings and loan association (VLSA) groups and randomised (with stratification by district) to either the full community-level Indashyikirwa programme (n=14) or VSLA-only control (n=14). Within each sector, 60 couples recruited from VSLAs received either a 21-session curriculum or VSLA as usual. No blinding was attempted. Primary outcomes were perpetration (for men) or experience (for women) of past-year physical/sexual IPV at 24 months post-baseline, hypothesised to be reduced in intervention versus control (ClinicalTrials.gov: NCT03477877).

Results

We enrolled 828 women and 821 men in the intervention sectors and 832 women and 830 men in the control sectors; at endline, 815 women (98.4%) and 763 men (92.9%) in the intervention and 802 women (96.4%) and 773 men (93.1%) were available for intention-to-treat analysis. Women in the intervention compared with control were less likely to report physical and/or sexual IPV at 24 months (adjusted relative risk (aRR)=0.44, 95% CI 0.34 to 0.59). Men in the intervention compared with control were also significantly less likely to report perpetration of physical and/or sexual IPV at 24 months (aRR=0.54, 95% CI 0.38 to 0.75). Additional intervention benefits included reductions in acceptability of wife beating, conflict with partner, depression, and corporal punishment against children and improved conflict management, communication, trust, self-efficacy, self-rated health, household earnings, food security and actions to prevent IPV. There were no study-related harms.

Conclusions

The Indashyikirwa couples’ training curriculum was highly effective in reducing IPV among male/female couples in rural Rwanda. Scale-up and adaptation to similar settings should be considered.

Modelling collective action to change social norms around domestic violence: social dilemmas and the role of altruism

Interventions promoting collective action have been used to prevent domestic violence in a range of settings, but their mechanisms of operation remain unclear. We formalise and combine feminist theoretical approaches to domestic violence into a game-theoretic model of women's collective action to change gendered social norms and outcomes. We show that social norms create a social dilemma in which it is individually rational for women to abstain from action to prevent domestic violence among neighbours, but all women suffer negative consequences if none take action. Promoting altruism among women can overcome the social dilemma. Discouraging women from tolerating domestic violence, imposing additional external punishment on men for perpetrating violence, or lowering costs to women of taking action against violence may not work or even backfire. We invite researchers on community mobilisation to use our framework to frame their understandings of collective action to prevent domestic violence.

What can we learn from studying control arms of randomised VAW prevention intervention evaluations: reflections on expected measurement error, meaningful change and the utility of RCTs

Background: Randomised controlled trials (RCTs) are a gold standard for evaluations in public health, economics and social sciences, including prevention of violence against women (VAW). They substantially reduce bias, but do not eliminate measurement error. Control arms often show change, but this is rarely systematically examined.Objective: We present a secondary analysis of data from the control arms of evaluations of VAW prevention programming to understand measurement variance over time, factors that may systematically impact this and make recommendations for stronger trial design and interpretation.Methods: We examine data from six RCTs and one quasi-experimental study, all of which used comparable measures. We look at change over time among control participants in prevalence of physical intimate partner violence (IPV), sexual IPV, and severe physical/sexual IPV, by participants' gender and study design (cohort vs. repeat cross-sectional).Results: On average, repeated assessments of past year IPV varied by 3.21 (95%Cis 1.59,4.83) percentage points for the studies with no active control arms. The prevalence at endline, as a proportion of that at baseline, on average differed by 17.7%. In 10/35 assessments from 4/7 studies, the difference was more than 30%. We did not find evidence of the Hawthorne effect or repeat interview bias as explanations. Our findings largely supported non-differential misclassification (measurement error) as the most likely error and it was a greater problem for men.Conclusions: Control arms are very valuable, but in VAW research their measures fluctuate. This must be considered in sample size calculations. We need more rigorous criteria for determining trial effect. Our findings suggest this may be an absolute change in prevalence of 7% and proportionate change of 0.4 or more (especially for studies in populations with lower IPV prevalence (<20%)). More elaborate pre-defined outcomes are necessary for determining impact (or possible harms) of VAW prevention interventions.