Koziol-McLain, JVandal, ACWilson, DNada-Raja, SDobbs, TMcLean, CSisk, REden, KEGlass, NE2026-05-212026-05-212018-01-10Journal of Medical Internet Research, ISSN: 1438-8871 (Print); 1438-8871 (Online), JMIR Publications, 20(1), e426-. doi: 10.2196/jmir.86171438-88711438-8871http://hdl.handle.net/10292/21165Background: Intimate partner violence (IPV) is a human rights violation and leading health burden for women. Safety planning is a hallmark of specialist family violence intervention, yet only a small proportion of women access formal services. A Web-based safety decision aid may reach a wide audience of women experiencing IPV and offer the opportunity to prioritize and plan for safety for themselves and their families. Objective: The aim of this study was to test the efficacy of a Web-based safety decision aid (isafe) for women experiencing IPV. Methods: We conducted a fully automated Web-based two-Arm parallel randomized controlled trial (RCT) in a general population of New Zealand women who had experienced IPV in the past 6 months. Computer-generated randomization was based on a minimization scheme with stratification by severity of violence and children. Women were randomly assigned to the password-protected intervention website (safety priority setting, danger assessment, and tailored action plan components) or control website (standard, nonindividualized information). Primary endpoints were self-reported mental health (Center for Epidemiologic Studies Depression Scale-Revised, CESD-R) and IPV exposure (Severity of Violence Against Women Scale, SVAWS) at 12-month follow-up. Analyses were by intention to treat. Results: Women were recruited from September 2012 to September 2014. Participants were aged between 16 and 60 years, 27% (111/412) self-identified as Maori (indigenous New Zealand), and 51% (210/412) reported at baseline that they were unsure of their future plans for their partner relationship. Among the 412 women recruited, retention at 12 months was 87%. The adjusted estimated intervention effect for SVAWS was -12.44 (95% CI -23.35 to -1.54) for Maori and 0.76 (95% CI -5.57 to 7.09) for non-Maori. The adjusted intervention effect for CESD-R was -7.75 (95% CI -15.57 to 0.07) for Maori and 1.36 (-3.16 to 5.88) for non-Maori. No study-related adverse events were reported. Conclusions: The interactive, individualized Web-based isafe decision aid was effective in reducing IPV exposure limited to indigenous Maori women. Discovery of a treatment effect in a population group that experiences significant health disparities is a welcome, important finding.© Jane Koziol-McLain, Alain C Vandal, Denise Wilson, Shyamala Nada-Raja, Terry Dobbs, Christine McLean, Rose Sisk, Karen B Eden, Nancy E Glass. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 10.01.2018. This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.New ZealanddepressioneHealthintimate partner violencepopulation groupsrandomized controlled trial4203 Health Services and Systems42 Health SciencesWomen's HealthClinical ResearchViolence ResearchBehavioral and Social ScienceViolence Against WomenMental HealthClinical Trials and Supportive Activities5 Gender Equality3 Good Health and Well Being16 Peace, Justice and Strong Institutions08 Information and Computing Sciences11 Medical and Health Sciences17 Psychology and Cognitive SciencesMedical Informatics4203 Health services and systemsAdolescentAdultAustraliaDecision Support TechniquesDomestic ViolenceFemaleHumansInternetIntimate Partner ViolenceMental HealthMiddle AgedNew ZealandSexual PartnersYoung AdultHumansMental HealthDecision Support TechniquesDomestic ViolenceInternetAdolescentAdultMiddle AgedSexual PartnersAustraliaNew ZealandFemaleYoung AdultIntimate Partner ViolenceAdolescentAdultAustraliaDecision Support TechniquesDomestic ViolenceFemaleHumansInternetIntimate Partner ViolenceMental HealthMiddle AgedNew ZealandSexual PartnersYoung AdultJournal ArticleOpenAccess10.2196/jmir.8617