Table 3.

Estimated time-varying and time-invariant coefficients and P values for testing overall covariate effects and proportional hazards.

Covariate	Log hazard ratio		Overall P value	Nonprop P value
	Min	Max
Donor blood type
A	−1.081	−0.333	0.140	0.481
B	−0.900	0.208	0.700	0.510
AB	−2.741	5.370	0.001	0.001
Serum creatinine (mg/dL)	1.622		<0.001
On ventilator	−0.844	2.364	0.002	0.011
Positive CMV	0.697		0.010
Female gender	−0.738	1.013	0.040	0.006