. Author manuscript; available in PMC: 2009 Sep 3.

Published in final edited form as: Stat Med. 2008 Aug 15;27(18):3563–3584. doi: 10.1002/sim.3242

Table II.

Semiparametric additive excess hazards model: 300 simulation-based tests for time-invariant effects and estimates of constant effects

Test for time-invariant effects					Constant effects
Covariate	T_2S	p-Value	T_2I	p-Value	Covariate	Coefficient γ	Robust SE
Intercept	0.065	0.003	0.008	0.003	Sex (female=1)	0.043	0.010
CHF	0.120	<0.001	0.043	<0.001	Diabetes	0.083	0.018
Agec	0.006	0.003	0.0001	0.003
VF	0.458	<0.001	0.432	<0.001