Table 1 Parameter estimates (standard errors in brackets) of the best fitting two-component Gaussian mixture model for the regression of age-at-diagnosis of female breast cancer among US women diagnosed from 1990 to 2009 based on 40 imputations of a sample of size n = 20,000
Covariate | β1 | β2 | γ1 | γ2 | δ |
|---|---|---|---|---|---|
Intercept | 50.29∗∗∗ (1.111) | 71.91∗∗∗ (2.027) | 4.039∗∗∗ (0.160) | 4.172∗∗∗ (0.237) | −0.793∗ (0.337) |
trend | 347.3∗∗∗ (37.97) | 363.1∗∗∗ (50.02) | 25.92∗∗∗ (4.748) | −20.28∗∗∗ (6.118) | −73.57∗∗∗ (8.561) |
SITE2 | −1.901∗∗ (0.732) | −4.311∗∗∗ (1.149) | −0.387∗∗ (0.125) | 0.359∗∗ (0.119) | 0.713∗∗ (0.234) |
SITE 3 | 0.594 (0.820) | 0.904 (0.812) | 0.099 (0.100) | 0.181 (0.100) | 0.292 (0.156) |
GRADE 2 | −0.007 (0.692) | 0.351 (0.725) | 0.211∗ (0.096) | −0.033 (0.094) | −0.257 (0.143) |
GRADE 3 | −1.368 (0.744) | −0.172 (0.870) | 0.287∗∗ (0.105) | 0.009 (0.110) | −0.698∗∗∗ (0.160) |
EXTENSION 2 | 0.863 (0.890) | 2.686 (1.693) | 0.245∗ (0.121) | 0.040 (0.199) | 0.314 (0.293) |
EXTENSION 3 | 4.089∗∗∗ (1.189) | 6.573∗∗∗ (1.781) | 0.355∗ (0.159) | −0.147 (0.211) | 0.455 (0.311) |
LYMPH 2 | −2.380∗∗∗ (0.571) | −2.658∗∗∗ (0.704) | −0.100 (0.073) | 0.113 (0.090) | −0.165 (0.122) |
SIZE 2 | −0.540 (0.560) | 2.060∗∗ (0.693) | 0.125 (0.070) | 0.088 (0.085) | −0.088 (0.120) |
RACE 2 | −0.562 (0.738) | −1.174 (1.221) | 0.057 (0.093) | −0.007 (0.147) | −0.433∗ (0.194) |
RACE 3 | −0.708 (0.863) | −1.428 (1.151) | 0.109 (0.108) | −0.133 (0.149) | −0.462∗ (0.211) |
MARRIED 2 | 1.961∗∗∗ (0.567) | −0.696 (0.979) | −0.185∗ (0.075) | 0.005 (0.125) | 0.845∗∗∗ (0.143) |