. Author manuscript; available in PMC: 2012 Nov 1.

Published in final edited form as: Heart Lung. 2011 Mar 30;40(6):492–501. doi: 10.1016/j.hrtlng.2010.08.001

Table 5.

Cox proportional hazards model with statistical control for clinical and demographical variables

Step	Predictors	All cause of death and hospitalization
Step	Predictors	Hazard ratio (95% CI)	p-value
1	Age > 65 (age ≤65 reference)	1.20 (.764 – 1.887)	.428
	Male, gender (female-reference)	1.165 (.770–1.781)	.470
	NYHA class II (reference)	-	-
	III	1.161 (.714 – 1.890)	.547
	IV	1.399 (.732 – 2.673)	.390
	Functional status	.983 (.963 – 1.004)	.108

2	No depressive symptoms with high PSS (reference)	1.0	.235
	No depressive symptoms with low PSS	1.371 (.809 – 2.322)	.241
	Depressive symptoms with high PSS	1.410 (.677 – 2.937)	.358
	Depressive symptoms with low PSS	1.801 (1.027 – 3.158)	.040

Note: This is the final step of the Cox regression (full model p-value = .006); CI = Confidence Interval; NYHA = New York Heart Association; PSS= Perceived social support