Characteristics of patients, bystander CPR, EMS, and the interval of CPR (The derivation and validation data set combined).

Missing data are; AED by bystander (1,608), Dispatcher assisted with CPR (162), Kinds of Defibrillator (3,275).CPR = Cardiopulmonary resuscitation, SD = Standard deviation, AED = Automated external defibrillator, ECG = Electrocardiogram, VF = Ventricular fibrillation, VT = Ventricular tachycardia, PEA = Pulseless electrical activity, DC = Defibrillator cardioversion, EMS = Emergency medical service staff, LM = Lar y neal mask, IV = Intravenous fluid, ROSC = Return of spontaneous circulation, Q1 = 25% interquartile, Q3 = 75% interquartile.

本数据集存在如下缺失数据：旁观者自动体外除颤器（Automated external defibrillator, AED）相关记录共1608条缺失，调度员辅助心肺复苏（Cardiopulmonary resuscitation, CPR）相关记录共162条缺失，除颤器类型相关记录共3275条缺失。本数据集涉及的专业缩写及对应含义如下：CPR即心肺复苏（Cardiopulmonary resuscitation, CPR），SD为标准差（Standard deviation, SD），AED为自动体外除颤器（Automated external defibrillator, AED），ECG为心电图（Electrocardiogram, ECG），VF为心室颤动（Ventricular fibrillation, VF），VT为室性心动过速（Ventricular tachycardia, VT），PEA为无脉性电活动（Pulseless electrical activity, PEA），DC为除颤复律（Defibrillator cardioversion, DC），EMS为急诊医疗服务人员（Emergency medical service staff, EMS），LM为喉罩（Laryngeal mask, LM），IV为静脉输液（Intravenous fluid, IV），ROSC为自主循环恢复（Return of spontaneous circulation, ROSC），Q1为第25百分位四分位数，Q3为第75百分位四分位数。