Skip to main content
. 2009 May 19;28(15):1982–1998. doi: 10.1002/sim.3618

Table VI.

Simulation results for parameter βZ in bivariate model.

Settings Analyses


βX βZ ρ n PERFECT CC LOGT T T2 NA NA-INT COX*
Bias
MCAR 0 0 0 336 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00
0 0 0.5 336 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00
0 0.5 0 336 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
0 0.5 0.5 336 0.01 0.02 0.01 0.01 0.01 0.01 0.01 0.01
0.5 0 0 84 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01
0.5 0 0.5 84 0.00 0.01 0.03 0.02 0.03 0.02 0.03 0.02
0.5 0.5 0 84 0.02 0.03 0.00 0.00 −0.01 0.00 0.02 0.00
0.5 0.5 0.5 84 0.02 0.04 0.03 0.03 0.04 0.03 0.04 0.03
MAR 0.5 0.5 0 84 0.02 0.04 0.00 −0.01 −0.01 −0.01 0.01 −0.01
0.5 0.5 0.5 84 0.02 0.05 0.04 0.04 0.05 0.04 0.04 0.04
Per cent error in model standard error
MCAR 0 0 0 336 −2 1 −1 −1 −1 −1 −2 −1
0 0 0.5 336 −2 1 2 1 2 1 1 1
0 0.5 0 336 0 0 1 1 1 1 1 2
0 0.5 0.5 336 0 0 4 3 4 3 3 3
0.5 0 0 84 4 −6 9 9 10 9 6 9
0.5 0 0.5 84 4 −6 8 6 8 6 5 6
0.5 0.5 0 84 2 −4 6 7 8 6 5 8
0.5 0.5 0.5 84 4 −3 5 5 6 5 5 5
MAR 0.5 0.5 0 84 2 −7 9 9 10 9 11 10
0.5 0.5 0.5 84 4 −7 9 8 9 8 7 7
Per cent power
MCAR 0 0.5 0 336 100 100 100 100 100 100 100 100
0 0.5 0.5 336 100 97 100 100 100 100 100 100
0.5 0.5 0 84 86 51 77 76 76 76 78 77
0.5 0.5 0.5 84 76 41 68 66 69 66 68 67
MAR 0.5 0.5 0 84 86 43 72 72 72 73 73 73
0.5 0.5 0.5 84 76 36 64 65 66 64 63 65

Monte Carlo error is ≤0.01 for bias, ≤3 per cent for per cent error in model standard error and ≤1.6 per cent for power. Bold cells have bias greater than 0.03, more than 10 per cent error in model standard error or power more than 3 per cent worse than method T.