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. Author manuscript; available in PMC: 2024 Jan 1.
Published in final edited form as: Biostat Epidemiol. 2018 Jul 26;7(1):1500089. doi: 10.1080/24709360.2018.1500089

Table 5.

Cell probability based on simulation results for the global odds model and proportional odds

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