. Author manuscript; available in PMC: 2013 May 29.

Published in final edited form as: Biometrika. 2006 Dec;93(4):763–775. doi: 10.1093/biomet/93.4.763

Table 3.

Bias and standard error of Λ̂₀(t) using the proposed semiparametric method when the observation time process depends only on observed covariates

t	Λ₀(t)	n=100		n=1000
t	Λ₀(t)	Bias	SE	Bias	SE
1·0	2	0·005	0·394	0·006	0·136
3·0	6	0·024	0·879	0·004	0·301
5·0	10	0·093	1·352	0·033	0·464
7·0	14	0·175	1·887	0·073	0·594
9·0	18	0·204	2·550	0·082	0·814

Bias and SE, the Monte Carlo sample mean and standard deviation of the 1000 estimates of Λ₀(t).