Sex-Based Disparities in Receiving Bystander Cardiopulmonary Resuscitation by Location of Cardiac Arrest in Japan

To assess whether sex-based disparities occur by location of arrest in out-of-hospital cardiac arrest (OHCA) victims receiving bystander cardiopulmonary resuscitation (BCPR). This secondary analysis of the All-Japan Utstein Registry included patients 18 years and older with OHCA of medical origin in public or residential locations, witnessed by bystanders, from January 1, 2013, through December 31, 2015. We assessed the likelihood of receiving BCPR based on sex differences and by arrest location. Sex-based disparities in receiving BCPR stratified by age and location were assessed via multivariable logistic regression analyses. During the study period, 373,359 OHCAs were registered, and 84,734 were eligible for analysis. Overall, 54.2% of women (3123 of 5766) and 57.0% of men (8672 of 15,213) received BCPR in public locations (P