Independent predictors of poor health in the whole population
| Characteristic | Regression 1 | Regression 2 (including the interaction term: age × intellectual disabilities) | ||
| OR | 95% CI of odds | OR | 95% CI of odds | |
| Ability | ||||
| No intellectual disabilities (reference) | – | – | – | – |
| Intellectual disabilities | 9.16 | 8.91 to 9.42 | 43.17 | 40.81 to 45.66 |
| Gender | ||||
| Male (reference) | – | – | – | – |
| Female | 1.03 | 1.03 to 1.04 | 1.03 | 1.03 to 1.04 |
| Age (years) | ||||
| 0–15 (reference) | – | – | – | – |
| 16–24 | 2.01 | 1.97 to 2.04 | 2.13 | 2.09 to 2.17 |
| 25–34 | 3.48 | 3.42 to 3.54 | 3.77 | 3.71 to 3.84 |
| 35–44 | 6.18 | 6.08 to 6.27 | 6.73 | 6.63 to 6.84 |
| 45–54 | 9.96 | 9.82 to 10.11 | 10.87 | 10.70 to 11.04 |
| 55–64 | 16.77 | 16.53 to 17.03 | 18.27 | 17.99 to 18.55 |
| 65–74 | 25.71 | 25.34 to 26.09 | 28.00 | 27.57 to 28.44 |
| 75+ | 52.36 | 51.59 to 53.15 | 56.96 | 56.08 to 57.86 |
| Age by ability (years) | ||||
| 0–15 | – | – | – | – |
| 16–24 | – | – | 0.39 | 0.36 to 0.43 |
| 25–34 | – | – | 0.22 | 0.20 to 0.24 |
| 35–44 | – | – | 0.14 | 0.13 to 0.16 |
| 45–54 | – | – | 0.11 | 0.10 to 0.12 |
| 55–64 | – | – | 0.08 | 0.08 to 0.09 |
| 65–74 | – | – | 0.05 | 0.05 to 0.06 |
| 75+ | – | – | 0.03 | 0.03 to 0.04 |
| Constant | ||||
| – | 0.23 | – | 0.02 | – |