Table 2 Estimation of the final occurrence rate of the event P(E) at the end of follow-up according to the estimation method in MCAR and MAR scenarios (500 replications of samples sized 2000)
Scenario n° | True occurrence rate of the event P(E)(%) | Kaplan-Meier | Multiple Imputation | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Estimate (a) | Standard Error (a) | Bias (b) | Coverage (c) | Estimate (a) | Standard Error (a) | Bias (b) | Coverage (c) | |||
MCAR scenarios | 1 | 34.4 | 34.3 | 1.1 | -0.04 | 94.6 | 34.4 | 1.2 | -0.01 | 94.6 |
2 | 61.3 | 61.3 | 1.2 | -0.09 | 95.6 | 61.3 | 1.2 | -0.08 | 95.0 | |
3 | 80.4 | 80.5 | 1.0 | 0.08 | 95.8 | 80.5 | 1.0 | 0.09 | 95.4 | |
MAR scenarios | 4 | 34.4 | 34.3 | 1.5 | -0.07 | 95.2 | 34.4 | 1.8 | 0.01 | 94.4 |
5 | 61.3 | 56.3 | 1.6 | -5.1 | 10.6 | 61.5 | 1.8 | 0.2 | 92.4 | |
6 | 80.4 | 75.7 | 1.2 | -4.7 | 2.6 | 80.6 | 1.1 | 0.2 | 92.2 | |
7 | 61.3 | 66.2 | 1.6 | 4.9 | 14.8 | 63.0 | 1.8 | 1.6 | 85.2 | |
8 | 80.4 | 87.4 | 1.5 | 7.0 | 0.2 | 82.1 | 1.8 | 1.7 | 83.4 | |