Advanced Age as a Predictor of Survival and Weaning in Venoarterial Extracorporeal Oxygenation: A Retrospective Observational Study

Table 4

Hazard ratios with 95% confidence intervals about survival probability and ECMO weaning probability according to age.

	Age < 50	50 ≤ age < 60	60 ≤ age < 70	Age ≥ 70
	Hazard ratios with 95% confidence intervals about survival probability according to age
Age < 50	—	1.87; 0.99 to 3.54	2.90; 1.70 to 4.97	5.71; 3.38 to 9.65
50 ≤ age < 60	0.53; 0.28 to 1.01	—	1.55; 0.83 to 2.90	3.05; 1.65 to 5.63
60 ≤ age < 70	0.34; 0.20 to 0.59	0.65; 0.35 to 1.21	—	1.97; 1.18 to 3.27
Age ≥ 70	0.18; 0.10 to 0.30	0.33; 0.18 to 0.61	0.51; 0.31 to 0.84	—
	Hazard ratios with 95% confidence intervals about ECMO weaning probability according to age
Age < 50	—	1.60; 0.86 to 3.00	2.0; 1.08 to 3.89	2.06; 1.16 to 3.63
50 ≤ age < 60	0.62; 0.33 to 1.17	—	1.28; 0.65 to 2.50	1.28; 0.70 to 2.34
60 ≤ age < 70	0.49; 0.2570 to 0.9268	0.78; 0.40 to 1.53	—	1.00; 0.54 to 1.86
Age ≥ 70	0.4865; 0.28 to 0.86	0.78; 0.43 to 1.42	1.00; 0.54 to 1.85	—

ECMO, extracorporeal membrane oxygenation.