Table 5.
Simulation number |
||||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
True probabilities, % | ||||||||
Pr(Y=1,Z=1|X=1) | 10.56 | 15.51 | 20.20 | 15.51 | 20.20 | 24.06 | 20.20 | 24.06 |
Pr(Y=1,Z=2|X=1) | 9.37 | 9.11 | 7.90 | 9.11 | 7.90 | 6.09 | 7.90 | 6.09 |
Pr(Y=2,Z=1|X=1) | 7.60 | 7.90 | 7.48 | 7.90 | 7.48 | 6.46 | 7.48 | 6.46 |
Pr(Y=1,Z=3|X=1) | 11.87 | 7.18 | 3.70 | 7.18 | 3.70 | 1.65 | 3.70 | 1.65 |
Pr(Y=3,Z=1|X=1) | 15.05 | 9.79 | 5.52 | 9.79 | 5.52 | 2.68 | 5.52 | 2.68 |
Pr(Y=2,Z=2|X=1) | 6.74 | 7.47 | 9.49 | 7.47 | 9.49 | 12.41 | 9.49 | 12.41 |
Pr(Y=2,Z=3|X=1) | 8.54 | 7.51 | 5.91 | 7.51 | 5.91 | 4.02 | 5.91 | 4.02 |
Pr(Y=3,Z=2|X=1) | 13.35 | 12.89 | 12.07 | 12.89 | 12.07 | 10.97 | 12.07 | 10.97 |
Pr(Y=3,Z=3|X=1) | 16.92 | 22.64 | 27.72 | 22.64 | 27.72 | 31.67 | 27.72 | 31.67 |
Bias, E-2 | ||||||||
GOM | ||||||||
Pr(Y=1,Z=1|X=1) | 0.00 | 0.00 | −0.04 | 0.00 | −0.02 | −0.02 | −0.02 | −0.01 |
Pr(Y=1,Z=2|X=1) | −0.03 | −0.04 | −0.03 | −0.05 | −0.04 | −0.04 | −0.04 | −0.05 |
Pr(Y=2,Z=1|X=1) | 0.02 | 0.03 | 0.02 | 0.03 | 0.03 | 0.05 | 0.03 | 0.06 |
Pr(Y=1,Z=3|X=1) | 0.00 | −0.02 | −0.01 | −0.02 | 0.00 | 0.00 | 0.00 | 0.00 |
Pr(Y=3,Z=1|X=1) | −0.02 | −0.01 | −0.01 | −0.01 | −0.01 | 0.00 | −0.01 | 0.00 |
Pr(Y=2,Z=2|X=1) | 0.06 | 0.06 | 0.06 | 0.06 | 0.04 | 0.03 | 0.04 | 0.02 |
Pr(Y=2,Z=3|X=1) | 0.02 | 0.01 | 0.02 | 0.01 | 0.02 | 0.01 | 0.02 | 0.02 |
Pr(Y=3,Z=2|X=1) | −0.03 | −0.02 | −0.03 | −0.03 | −0.04 | −0.02 | −0.05 | −0.04 |
Pr(Y=3,Z=3|X=1) | −0.01 | 0.00 | 0.01 | 0.00 | 0.02 | −0.02 | 0.03 | 0.00 |
POM times POMc | ||||||||
Pr(Y=1,Z=1|X=1) | 0.01 | 0.03 | −0.04 | −0.95 | −1.28 | −1.28 | −2.25 | −2.53 |
Pr(Y=1,Z=2|X=1) | −0.02 | 0.10 | 0.55 | 0.16 | 0.79 | 1.46 | 0.94 | 1.87 |
Pr(Y=2,Z=1|X=1) | 0.03 | 0.05 | 0.14 | 0.08 | 0.36 | 0.70 | 0.49 | 1.05 |
Pr(Y=1,Z=3|X=1) | −0.02 | −0.04 | −0.14 | 0.79 | 0.69 | 0.30 | 1.39 | 0.98 |
Pr(Y=3,Z=1|X=1) | −0.04 | −0.08 | −0.12 | 0.89 | 0.93 | 0.63 | 1.78 | 1.55 |
Pr(Y=2,Z=2|X=1) | 0.04 | −0.28 | −1.05 | −0.40 | −1.45 | −2.57 | −1.69 | −3.23 |
Pr(Y=2,Z=3|X=1) | 0.02 | 0.05 | 0.21 | 0.32 | 0.70 | 0.98 | 1.05 | 1.60 |
Pr(Y=3,Z=2|X=1) | −0.03 | 0.17 | 0.49 | 0.22 | 0.62 | 1.08 | 0.70 | 1.29 |
Pr(Y=3,Z=3|X=1) | 0.01 | −0.01 | −0.04 | −1.10 | −1.35 | −1.31 | −2.39 | −2.58 |
GOM = global odds model, POM = proportional odds model, POMc= Proportional odds model of Y controlling for Z or Z controlling for Y