Study	Reason for exclusion
Arrab 2018	Did not assess the impacts of training alone: assessed a systems intervention (also excluded on design as it is a quasi‐experimental study)
Campbell 2001	Did not assess the impacts of training alone: assessed a systems intervention that did not assess the impacts of training alone (included training administrators)
Carroll 2005	Did not assess the impacts of training: assessed the impact of a screening intervention (the Alpha form)
Cripe 2010	Did not assess the impacts of training: evaluation of an empowerment intervention and not an evaluation of training healthcare providers
Dubowitz 2011	Did not assess the impacts of training alone: social worker spent a half‐ or full day per week in the intervention group
Duggan 2007	Did not assess the impacts of training HCPs to respond to IPV: training in child abuse
Feder 2011	Did not assess the impacts of training alone: intervention group included administrative staff who received a 1‐hour training session on confidentiality and patient safety and IRIS information materials
Feigelman 2011	Did not assess the impacts of training alone: social worker was available to the intervention group
Garg 2007	Did not assess the impacts of training alone: study carried out screening for IPV by research assistants
Jack 2019	Inadequate comparison group: correspondence with the author confirmed that the control group received universal screening for IPV
McFarlane 2006	Inadequate comparison group: author correspondence confirmed that both intervention and control arms received training interventions. The study aimed to assess the impact of case management, not training
Miller 2011	Did not assess the impacts of training alone: intervention included materials (card) aimed to serve as an intervention for patients
Miller 2016	Did not assess the impacts of training alone: training is not the main component of the intervention, and the study focuses on student education and counselling
Miller 2017	Did not assess the impacts of training alone: included a palm‐sized information brochure on health risks of IPV and safety planning in the intervention arm
Nagler 1993	Did not assess the impacts of training HCPs to respond to survivors of IPV: primarily a bystander intervention carried out with medical students to prevent acquaintance rape
Thompson 2000	Did not assess the impacts of training alone: intervention arm received DV brochures in restrooms, posters, cue cards, questionnaires, bi‐monthly newsletter, etc.
Vijayalakshmi 2021	Intervention has a focus on family violence. Did not assess IPV: assessed family violence involving all family members, not just intimate partners
Zachor 2108	Did not assess the impacts of training on HCPs alone: included administrative staff in clinic and did not separate results

DV: domestic violence; HPCs: healthcare providers; IPV: intimate partner violence; IRIS: identification and referral to improve safety