Table 4.

Coverage probabilities and average length of 0.95 confidence intervals, bias, and root mean square error (rMSE) for C_τ with τ = 10 and 15, based on 1000 of iterations for a working Cox’s model with (AGE, ER, GS), when the true model is (I) the Weibull regression model with AGE, ER and GS.

			Coverage		Ave. Length		Bias		rMSE
τ	Censoring	N	(1)	(2)	(1)	(2)	(1)	(2)	(1)	(2)
10	(a) Degenerate	100	0.951	0.913	0.214	0.176	0.008	0.008	0.047	0.047
		150	0.945	0.917	0.162	0.145	0.008	0.008	0.038	0.038
		200	0.948	0.934	0.136	0.126	0.005	0.005	0.033	0.033
		300	0.942	0.934	0.108	0.103	0.003	0.003	0.027	0.027
	(b) Independent	100	0.948	0.896	0.241	0.196	0.011	0.015	0.053	0.055
		150	0.952	0.903	0.184	0.163	0.007	0.010	0.043	0.044
		200	0.942	0.914	0.152	0.141	0.009	0.012	0.037	0.039
		300	0.954	0.938	0.122	0.118	0.003	0.007	0.029	0.030
	(c) Cond. Independent	100	0.948	0.892	0.241	0.196	0.011	0.015	0.053	0.055
		150	0.951	0.898	0.184	0.163	0.007	0.010	0.043	0.044
		200	0.946	0.916	0.152	0.142	0.009	0.012	0.037	0.039
		300	0.954	0.937	0.122	0.118	0.003	0.007	0.029	0.030
15	(a) Degenerate	100	0.951	0.912	0.174	0.149	0.006	0.006	0.040	0.040
		150	0.945	0.925	0.134	0.123	0.007	0.007	0.032	0.032
		200	0.956	0.938	0.113	0.107	0.003	0.003	0.027	0.027
		300	0.956	0.944	0.091	0.087	0.002	0.002	0.022	0.022
	(b) Independent	100	0.944	0.876	0.271	0.191	0.011	0.019	0.059	0.055
		150	0.952	0.896	0.207	0.159	0.007	0.015	0.048	0.045
		200	0.932	0.892	0.172	0.138	0.007	0.017	0.042	0.040
		300	0.950	0.926	0.137	0.115	0.003	0.012	0.033	0.031
	(c) Cond. Independent	100	0.946	0.872	0.271	0.192	0.011	0.020	0.059	0.056
		150	0.952	0.894	0.206	0.159	0.007	0.015	0.048	0.045
		200	0.942	0.881	0.173	0.139	0.008	0.017	0.043	0.040
		300	0.951	0.925	0.137	0.115	0.004	0.012	0.033	0.031

⁽¹⁾New Method

⁽²⁾Conventional