Table 3.

Univariate Cox Regression Results for Peak VO2 and VE/VCO2 Slope

Variables	Event	Number of Events	X 2	p	95% CI
VO2 peak	Cardiac mortality (1 y) Cardiac hospitalization (1 y)	28 66	42.09 54.98	<0.0001 <0.0001	5.44 – 37.12 3.99 - 10.89
VE/VCO2 slope	Cardiac mortality (1 y) Cardiac hospitalization (1 y)	28 66	44.48 70.41	<0.0001 <0.0001	1.09 – 1.17 1.08 – 1.13