“…1). A total of 27,106 patients, including 12,363 patients with non-cardiac origin arrest (12,363), obvious irreversible death (7,652), CPR refusal (3,820), aborted CPR (1,344), arrest in ambulance (939), age under 18 years or pregnant (421), do-not-resuscitate (359), and incomplete data (208) were excluded from the final analysis. Of those patients who met the inclusion criteria, 263 (2.2%) cardiac arrests occurred in the PB (PB group) while 11,626 (97.8%) occurred in other places (non-PB group).…”