Cardiopulmonary resuscitation duration and patient survival in a South Indian intensive care unit

Table 3 Multivariate Cox regression analysis of mortality predictors

Predictor	HR	95%CI	P value
CPR duration (per minute)	1.05	1.02-1.08	0.002
Absence of early ROSC	4.87	2.31-10.28	0.001
Age (per year)	1.03	1.01-1.06	0.008
Chronic kidney disease	2.15	1.12-4.13	0.021
Unwitnessed arrest	1.89	1.05-3.41	0.034

HR: Hazard ratio; CPR: Cardiopulmonary resuscitation; ROSC: Return of spontaneous circulation.