Research Article

A Two-Sample Parametric Test for Partly Interva-Censored Data with Nonproportional Hazard

Table 2

Estimated power and size of a test with exact observation based on simulated data with 10 multiple imputations and 1000 replications at the significance level 0.05 (0.01).


Early difference
Power ST0.3350.3140.2890.7280.6970.6690.9600.9460.933
(0.157)(0.142)(0.119)(0.486)(0.448)(0.401)(0.886)(0.864)(0.811)
Power LRT0.2360.2390.2310.6260.6070.5950.8900.8850.854
(0.083)(0.094)(0.093)(0.390)(0.392)(0.367)(0.824)(0.819)(0.778)
Size ST0.0370.0360.0400.0290.0330.0390.0350.0440.046
(0.008)(0.007)(0.012)(0.007)(0.005)(0.005)(0.002)(0.004)(0.002)
Size LRT0.0340.0410.0530.0330.0380.0510.0410.0590.064
(0.007)(0.007)(0.013)(0.007)(0.008)(0.006)(0.002)(0.005)(0.008)

Late difference
Power ST0.2110.2220.2270.4940.4770.4600.8350.8260.810
(0.056)(0.064)(0.061)(0.213)(0.201)(0.194)(0.600)(0.585)(0.558)
Power LRT0.2360.2520.2550.5160.5140.5170.8540.8470.839
(0.074)(0.085)(0.095)(0.250)(0.259)(0.251)(0.631)(0.634)(0.621)
Size ST0.0270.0270.0310.0330.0400.0350.0370.0380.038
(0.004)(0.006)(0.006)(0.007)(0.008)(0.004)(0.005)(0.004)(0.008)
Size LRT0.0330.0340.0500.0410.0480.0530.0410.0420.048
(0.009)(0.007)(0.008)(0.010)(0.010)(0.008)(0.008)(0.008)(0.011)

Cross difference
Power ST0.6460.6270.5810.9390.9160.89010.9970.995
(0.428)(0.413)(0.357)(0.846)(0.812)(0.754)(0.989)(0.985)(0.970)
Power LRT0.4840.5160.5080.9120.9150.9070.9990.9990.998
(0.269)(0.285)(0.286)(0.830)(0.826)(0.806)(0.993)(0.991)(0.989)
Size ST0.0520.0560.0540.0390.0450.0560.0380.0360.044
(0.012)(0.013)(0.018)(0.008)(0.010)(0.012)(0.006)(0.006)(0.011)
Size LRT0.0630.0770.0920.0590.0780.0950.0510.0630.078
(0.011)(0.012)(0.023)(0.016)(0.020)(0.028)(0.007)(0.015)(0.023)