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. Author manuscript; available in PMC: 2018 Mar 22.
Published in final edited form as: Stat Med. 2015 May 21;34(19):2768–2780. doi: 10.1002/sim.6534

Table V.

Monte Carlo results for Monte Carlo results for the marginal survival estimate at the median and 75th percentile survival times, where log(T) = 0.10 − 2Z1 + 0.5Z2 − 2Z3 + 2Z4 + 2Z5 + logistic(0, 1) and log(C) = 0.08 − 2.5Z1 + 0.5Z2 − 2Z3 + 2Z4 + 2Z5 + logistic(0, 1).

S(t) = 0.50
S(t) = 0.25
Method Esta Bias SDb SEc CRd Est Bias SD SE CR
N = 200
FO 0.5011 0.0011 0.0360 0.0353 93.4 0.2529 0.0029 0.0314 0.0306 92.6
PO 0.5594 0.0594 0.0422 0.0416 70.6 0.3222 0.0722 0.0499 0.0472 68.6
KMIBJ55 0.5092 0.0092 0.0449 0.0443 92.4 0.2658 0.0158 0.0488 0.0460 91.8
KMIPH55 0.5085 0.0085 0.0445 0.0447 94.4 0.2642 0.0142 0.0479 0.0460 92.2
KMIBJ53 0.5113 0.0113 0.0443 0.0441 93.0 0.2676 0.0176 0.0487 0.0461 91.6
KMIPH53 0.5099 0.0099 0.0447 0.0442 92.8 0.2649 0.0149 0.0490 0.0455 91.8
KMIBJ35 0.5171 0.0171 0.0448 0.0440 89.8 0.2743 0.0243 0.0488 0.0458 90.6
KMIPH35 0.5173 0.0173 0.0445 0.0437 91.8 0.2742 0.0242 0.0489 0.0458 89.0
IPCWLoglogistic 0.5020 0.0020 0.0475 0.0452 92.4 0.2579 0.0079 0.0536 0.0498 92.8
IPCWPH 0.5030 0.0030 0.0532 0.0440 87.4 0.2508 0.0008 0.0695 0.0418 77.4
PMILoglogistic 0.5013 0.0013 0.0372 0.0417 96.6 0.2526 0.0026 0.0355 0.0396 96.6
PMIWeibull 0.5023 0.0023 0.0391 0.0418 95.8 0.2361 −0.0139 0.0372 0.0389 93.6
N = 400
FO 0.5003 0.0003 0.0244 0.0250 95.8 0.2505 0.0005 0.0208 0.0216 95.8
PO 0.5571 0.0571 0.0286 0.0295 51.2 0.3168 0.0668 0.0323 0.0334 48.0
KMIBJ55 0.5037 0.0037 0.0310 0.0317 94.6 0.2588 0.0088 0.0307 0.0323 95.4
KMIPH55 0.5029 0.0029 0.0310 0.0317 95.2 0.2578 0.0078 0.0309 0.0320 95.0
KMIBJ53 0.5048 0.0048 0.0310 0.0315 95.4 0.2595 0.0095 0.0308 0.0319 94.8
KMIPH53 0.5036 0.0036 0.0310 0.0314 94.4 0.2583 0.0083 0.0309 0.0316 95.8
KMIBJ35 0.5092 0.0092 0.0308 0.0312 93.6 0.2642 0.0142 0.0315 0.0317 94.2
KMIPH35 0.5096 0.0096 0.0304 0.0312 94.4 0.2643 0.0143 0.0314 0.0321 92.8
IPCWLoglogistic 0.4994 −0.0006 0.0328 0.0327 94.2 0.2501 0.0001 0.0339 0.0355 94.8
IPCWPH 0.5005 0.0005 0.0390 0.0328 90.4 0.2389 −0.0111 0.0557 0.0332 78.4
PMILoglogistic 0.4988 −0.0012 0.0249 0.0293 98.8 0.2486 −0.0014 0.0225 0.0278 97.6
PMIWeibull 0.5008 0.0008 0.0265 0.0297 97.4 0.2336 −0.0164 0.0246 0.0275 92.4

Censoring rate = 50%, the Spearman correlation coefficient between T and C (i.e.,ρ) = 0.32.

FO, fully observed; PO, partially observed; KMI, Kaplan–Meier imputation; IPCW, inverse probability of censoring weighted; PMI, parametric multiple imputation.

a

Average of 500 point estimates.

b

Empirical standard deviation.

c

Average estimated standard error.

d

Coverage rate of 500 95% confidence intervals.