Table 3. Summary of the most and the least relevant and feasible strategies to build femicide data collection systems according to participants’ opinions.

The 5 most relevant and feasible strategies	The 5 least relevant and feasible strategies
51. Ensuring that all type of data collection systems (crime, court, etc.) gather at least the following information: sex of victim and perpetrator, type of relationship between them, prior history of domestic violence and previous institutional interventions.	49. Ensuring that cases where the court does not have enough evidence to convict the offender for a crime likely to be femicide are included in the monitoring systems as suspicious cases of femicide.
55. Identifying a minimum set of variables covered at least in the European context that allow us to know the situation in Europe and make comparisons between countries.	64. Reviewing past cases of women murdered to identify if they are femicides or not.
32. Establishing a database, publicly funded and sustained, to collect information on all forms of violence against women including femicide.	69. Interviewing perpetrators, relatives, friends, neighbors and acquaintances.
33. Ensuring that national data on femicide are collected following international recommendations and comparable with data collected in other countries.	63. Tracking cases in which the perpetrator commits suicide after committing the intimate partner femicide.
28. Training those in charge of collecting those data on the importance of gathering correct information on all relevant aspects.	48. Upgrading national records about the deaths and causes of death with the information about murder as a cause of death (Ministry of Health) and using this source as a possible detector of those murders that are committed before the perpetrator commits a suicide.

Results of strategies rating based on experts’ assessment of relevance and feasibility.