Hester van Eeren

| Chapter 4 4 | 84 Table II. Bias, standard error (SE) and mean squared error (MSE) of simulations – scenario 2* Sample size Correlation covariates X1,X2,X3 Correlation Z - X1, X2,X3 Variables in propensity score (PS) model Univariate PS X2, X3 X1, X2, X3 X2, X3, Z X1,X2,X3,Z X1, X2 N = 250 0 absent Bias 0.0017 0 .0032 -0.0964 -0.0438 0. 0021 SE 0.0072 0.0074 0.0082 0.0077 0.0076 MSE 0.0537 0.0575 0.0994 0.0678 0.0591 present Bias -0.0038 -0 .0051 -0.1062 -0.0555 -0 .0041 SE 0.0074 0.0077 0.0084 0.0080 0.0079 MSE 0.0576 0.0622 0.1116 0.0770 0.0643 0.3 absent Bias -0.0025 -0 .0032 -0.1120 -0.0736 -0 .0039 SE 0.0071 0.0076 0.0082 0.0081 0.0078 MSE 0.0525 0.0604 0.1117 0.0850 0.0618 present Bias 0.0299 0.0446 -0.1255 -0.0163 0.0528 SE 0.0074 0.0079 0.0089 0.0085 0.0080 MSE 0.0605 0.0717 0.1382 0.0763 0.0745 0.7 absent Bias 0.0037 0.0031 -0.0927 -0.0791 0.0041 SE 0.0070 0.0074 0.0080 0.0080 0.0074 MSE 0.0512 0.0558 0.0944 0.0872 0.0562 present Bias 0.0285 0.0540 -0.1354 -0.0226 0.0622 SE 0.0080 0.0084 0.0100 0.0095 0.0083 MSE 0.0684 0.0809 0.1901 0.1042 0.0798 N = 500 0 absent Bias -0.0006 -0.0001 -0.0998 -0.0482 -0.0001 SE 0.0053 0.0056 0.0060 0.0058 0.0057 MSE 0.0289 0.0330 0.0682 0.0427 0.0335 present Bias -0.0008 -0 .0014 -0.1006 -0.0497 -0 .0012 SE 0.0051 0.0053 0.0058 0.0055 0.0054 MSE 0.0269 0.0295 0.0660 0.0383 0.0302 0.3 absent Bias 0.0001 -0.0001 -0.1091 -0.0713 0.0000 SE 0.0049 0.0052 0.0056 0.0055 0.0053 MSE 0.0245 0.0279 0.0702 0.0467 0.0287 present Bias 0.0297 0.0444 -0.1238 -0.0168 0.0509 SE 0.0052 0.0056 0.0062 0.0060 0.0056 MSE 0.0317 0.0394 0.0943 0.0390 0.0404 0.7 absent Bias 0.0013 0 .0015 -0.0976 -0.0838 0. 0019 SE 0.0050 0.0052 0.0056 0.0057 0.0053 MSE 0.0259 0.0283 0.0634 0.0560 0.0287 present Bias 0.0248 0.0488 -0.1445 -0.0339 0.0591 SE 0.0058 0.0060 0.0072 0.0068 0.0059 MSE 0.0370 0.0443 0.1483 0.0633 0.0445