Model odds ratios and percentage of variation explained.a
| Model 1 OR (95% CI) | Model 2 OR (95% CI) | Model 3 OR (95% CI) | Model 4 OR (95% CI) | |
|---|---|---|---|---|
| Age (years) | ||||
| 0–15 | 1.0 | 1.0 | ||
| 16–34 | 1.9 (1.9 to 2.0) | 1.4 (1.4 to 1.4) | ||
| 35–64 | 2.5 (2.5 to 2.5) | 1.4 (1.4 to 1.5) | ||
| ≥65 | 3.2 (3.2 to 3.3) | 1.2 (1.1 to 1.2) | ||
| Sex | ||||
| Male | 1.0 | 1.0 | ||
| Female | 1.5 (1.4 to 1.5) | 1.1 (1.1 to 1.1) | ||
| Morbidity | ||||
| 1 (healthiest) | 1.0 | 1.0 | ||
| 2 | 5.4 (5.2 to 5.5) | 5.4 (5.3 to 5.6) | ||
| 3 | 9.3 (9.0 to 9.5) | 9.2 (8.9 to 9.4) | ||
| 4 | 18.2 (17.8 to 18.7) | 17.4 (16.9 to 17.8) | ||
| 5 | 27.4 (26.6 to 28.3) | 26.3 (25.5 to 27.1) | ||
| 6 (least healthy) | 36.2 (35.3 to 37.1) | 35.3 (34.3 to 36.3) | ||
| Variation | % | % | % | % |
| Total variance explained | 0 | 5.3 | 30.4 | 30.8 |
| Total variance unexplained | ||||
| at practice level | 4.6 | 4.5 | 3.6 | 3.6 |
| at patient level | 95.4 | 90.2 | 66.1 | 65.6 |
↵a OR = Odds ratio.