Ting PZY, Ho AFW, Lin X, et al. - Researchers here examined the characteristics, processes-of-care and outcome differences between residential and non-residential out-of-hospital cardiac arrest (OHCA). In addition, they studied the differences in temporal trends of bystander CPR (BCPR) rates. Using data from the prospective Pan-Asian Resuscitation Outcomes Study, they analyzed 8,397 cases in this national, observational study performed in Singapore from 2010 to 2016; of these patients, 5,990 (71.3%) were residential. Relative to non-residential arrests, residential arrests had significantly lower BCPR and bystander automated external defibrillator rates. Observations revealed more improvement in BCPR in residential arrests vs non-residential arrests over a period of city-wide interventions to improve BCPR.