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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: J Am Stat Assoc. 2009 Jun 1;104(486):803–815. doi: 10.1198/jasa.2009.0130

Table 1.

Simulation results: IPCW estimator, independent censoring.

g(t) = exp(t)
H1(t)
 H2(t)
 H3(t)
β0 n C%
β^¯a
 SE SEE CP
β^¯a
 SE SEE CP
β^¯a
 SE SEE CP
0 100 10 −0.006 0.1230 0.1200 0.944 −0.001 0.1162 0.1162 0.953 −0.001 0.1212 0.1226 0.953
0 100 30 −0.007 0.1611 0.1531 0.934 −0.004 0.1498 0.1480 0.947 −0.001 0.1557 0.1478 0.937
0 200 10 −0.005 0.0856 0.0843 0.954 0.001 0.0816 0.0820 0.950 0.005 0.0857 0.0867 0.956
0 200 30 −0.002 0.1115 0.1085 0.945 0.005 0.1082 0.1049 0.941 −0.000 0.1062 0.1040 0.947
0.5 100 10 0.499 0.0919 0.0917 0.951 0.507 0.0920 0.0897 0.943 0.502 0.0962 0.0962 0.954
0.5 100 30 0.502 0.1055 0.1060 0.949 0.507 0.1083 0.1043 0.944 0.505 0.1089 0.1081 0.944
0.5 200 10 0.502 0.0641 0.0648 0.951 0.503 0.0643 0.0633 0.951 0.505 0.0686 0.0684 0.953
0.5 200 30 0.501 0.0763 0.0755 0.950 0.503 0.0736 0.0736 0.951 0.503 0.0762 0.0760 0.951
g(t) = t
H1(t)
 H2(t)
 H3(t)
β0 n C%
β^¯a
 SE SEE CP
β^¯a
 SE SEE CP
β^¯a
 SE SEE CP
0 100 10 0.002 0.0421 0.0407 0.941 0.002 0.0425 0.0418 0.948 −0.002 0.0605 0.0607 0.948
0 100 30 −0.002 0.0570 0.0538 0.940 −0.003 0.0552 0.0532 0.941 0.003 0.0736 0.0720 0.941
0 200 10 0.000 0.0291 0.0287 0.943 −0.001 0.0301 0.0284 0.949 −0.002 0.0425 0.0431 0.951
0 200 30 0.000 0.0398 0.0381 0.940 0.000 0.0388 0.0378 0.943 −0.001 0.0520 0.0514 0.941
0.5 100 10 0.502 0.0748 0.0749 0.950 0.498 0.0773 0.0769 0.941 0.502 0.0951 0.0946 0.939
0.5 100 30 0.490 0.0973 0.0908 0.924 0.489 0.0991 0.0924 0.916 0.486 0.1117 0.1081 0.940
0.5 200 10 0.503 0.0532 0.0528 0.949 0.499 0.0537 0.0543 0.943 0.499 0.0674 0.0671 0.951
0.5 200 30 0.498 0.0658 0.0646 0.931 0.495 0.0646 0.0657 0.948 0.499 0.0788 0.0770 0.941

NOTE: β^¯arepresents the mean of the (1,000) point estimates of β0. SE represents the sample standard error of the estimates. SEE represents the mean of the standard error of β̂a. CP represents the empirical normal 95% coverage probability.