. 2020 Sep 1;24:541. doi: 10.1186/s13054-020-03259-w

Table 5.

Comparative effectiveness of OCCPR, compared to CCCPR, for survival to hospital discharge evaluated by the logistic regression analysis, instrumental variable analysis, and propensity score matching analysis

Models	Number of survivors		Adjusted odds ratio [95% confidence interval]	p value
Models	OCCPR	CCCPR	Adjusted odds ratio [95% confidence interval]	p value
Logistic regression analysis	157/1032 (15.2%)	293/1650 (11.7%)	1.99 [1.42–2.79]	< 0.001
Instrumental variable analysis	157/1032 (15.2%)	293/1650 (11.7%)	1.16 [1.02–1.31]	0.021
Propensity score matching analysis	89/531 (16.8%)	58/531 (10.9%)	1.66 [1.13–2.42]	0.009

Abbreviations: OCCPR open-chest cardiopulmonary resuscitation, CCCPR closed-chest cardiopulmonary resuscitation