Table 2.
Results of the regression models with cohort covariates
| Men |
Women |
|||||||
|---|---|---|---|---|---|---|---|---|
| Model without frailty |
Model with frailty |
Model without frailty |
Model with frailty |
|||||
| Estimate | 95% CI | Estimate | 95% CI | Estimate | 95% CI | Estimate | 95% CI | |
| a | 5.241×10–5 | 5.237×10–5 to 5.245×10–5 | 4.495×10–5 | 4.488×10–5 to 4.501×10–5 | 3.767×10–6 | 3.755×10–6 to 3.779×10–6 | 1.605×10–6 | 1.588×10–6 to 1.623×10–6 |
| b | 0.081 | 0.080 to 0.082 | 0.083 | 0.082 to 0.084 | 0.106 | 0.105 to 0.107 | 0.117 | 0.115 to 0.119 |
| c | – | – | – | – | 0.001 | 0.001 to 0.001 | 0.001 | 0.001 to 0.001 |
| σ2 | – | – | 0.035 | 0.027 to 0.045 | – | – | 0.096 | 0.082 to 0.111 |
| Cohort | 0.016 | 0.015 to 0.016 | 0.016 | 0.015 to 0.016 | 0.016 | 0.015 to 0.016 | 0.017 | 0.016 to 0.017 |
| Education level | ||||||||
| High | 1 | – | 1 | – | 1 | – | 1 | – |
| Medium | 1.166 | 1.147 to 1.186 | 1.221 | 1.200 to 1.243 | 1.141 | 1.116 to 1.166 | 1.111 | 1.086 to 1.137 |
| Low | 1.239 | 1.221 to 1.257 | 1.302 | 1.283 to 1.322 | 1.246 | 1.222 to 1.270 | 1.213 | 1.188 to 1.238 |
| Region of birth | ||||||||
| North-West | 1 | – | 1 | – | 1 | – | 1 | – |
| North-East | 1.053 | 1.036 to 1.070 | 1.060 | 1.042 to 1.077 | 0.989 | 0.973 to 1.004 | 0.974 | 0.958 to 0.991 |
| Centre | 1.011 | 0.984 to 1.038 | 0.996 | 0.969 to 1.024 | 0.939 | 0.913 to 0.966 | 0.968 | 0.939 to 0.998 |
| South | 1.000 | 0.988 to 1.012 | 0.950 | 0.938 to 0.962 | 0.932 | 0.919 to 0.945 | 0.987 | 0.973 to 1.002 |
| Abroad | 1.031 | 1.006 to 1.057 | 0.998 | 0.974 to 1.024 | 1.071 | 1.047 to 1.096 | 0.993 | 0.968 to 1.018 |
| logLk | −651 219 | −651 082 | −663 238 | −663 098 | ||||
| AIC | 1 302 456 | 1 302 184 | 1 326 496 | 1 326 218 | ||||
Baseline parameters (Gompertz for men and Makeham for women) and rate ratios of the differentials by education and region of birth.