Table 2. Estimated proportional odds ratios of covariates.
The odds ratios exp( ) along with 95% confidence intervals for the covariates age (centered at 40 years), education, alcohol intake, fruit and vegetable consumption, physical activity, education, nationality, and region are given for the four ways of evaluating the likelihood of model (4), i.e.,, using BMI measurements categorized according to the WHO and according to a different categorization with intervals of two BMI units (Int 2), numeric intervals taking rounding error into account (Int 2), and “exact” BMI values.
| Likelihood | ||||
|---|---|---|---|---|
| Covariate | WHO | Int 1 | Int 2 | Exact |
| Age (centered at 40 in y) | 0.968 (0.966–0.970) | 0.969 (0.967–0.971) | 0.968 (0.967–0.970) | 0.968 (0.967–0.970) |
| Alcohol intake (g/d) | 1.002 (0.999–1.004) | 1.003 (1.001–1.005) | 1.003 (1.001–1.004) | 1.002 (1.001–1.004) |
| Fruit and vegetables | ||||
| High | 1 | 1 | 1 | 1 |
| Low | 0.880 (0.824–0.940) | 0.928 (0.874–0.986) | 0.929 (0.878–0.983) | 0.929 (0.878–0.983) |
| Physical activity | ||||
| High | 1 | 1 | 1 | 1 |
| Moderate | 0.836 (0.774–0.903) | 0.850 (0.792–0.912) | 0.863 (0.808–0.921) | 0.862 (0.808–0.921) |
| Low | 0.695 (0.640–0.756) | 0.743 (0.688–0.802) | 0.769 (0.716–0.827) | 0.769 (0.716–0.826) |
| Education | ||||
| Mandatory | 1 | 1 | 1 | 1 |
| Secondary | 1.095 (0.992–1.209) | 1.252 (1.141–1.373) | 1.256 (1.150–1.371) | 1.254 (1.149–1.369) |
| Tertiary | 1.604 (1.441–1.786) | 1.760 (1.594–1.944) | 1.785 (1.625–1.961) | 1.781 (1.622–1.956) |
| Nationality | ||||
| Swiss | 1 | 1 | 1 | 1 |
| Foreign | 0.785 (0.728–0.848) | 0.832 (0.776–0.893) | 0.810 (0.758–0.864) | 0.809 (0.758–0.864) |
| Region | ||||
| German speaking | 1 | 1 | 1 | 1 |
| French speaking | 1.175 (1.091–1.266) | 1.147 (1.071–1.228) | 1.134 (1.063–1.208) | 1.133 (1.063–1.208) |
| Italian speaking | 1.190 (1.026–1.382) | 1.173 (1.024–1.344) | 1.236 (1.086–1.405) | 1.234 (1.085–1.403) |