Distribution of characteristics of 1457 patients across the 37 practices
| Characteristic | Mean or mean proportion (SD) |
|---|---|
| Age of patients per practice, yr, mean | 59.1 (6.5) |
| Female, % | 56.5 (10.9) |
| Perceived economic status, % | |
| Comfortable | 22.2 (10.1) |
| Sufficient income | 56.6 (9.3) |
| Poor or very poor | 21.2 (10.0) |
| No. of patients with at least 1 of the target chronic illnesses per practice, mean | 25 (11) |
| No. of patients with at least 1 of the target episodic illnesses per practice, mean | 16 (7) |
| Burden of comorbidity by ambulatory care group classification (out of 5) | 3.14 (0.35) |
| 12-Item Short Form Survey, physical | 41.0 (3.3) |
| 12-Item Short Form Survey, mental | 48.7 (3.8) |
| Interdisciplinary follow-up at the practice (chronic-care patients only), % | 36.6 (27.9) |
| Follow-up by a specialist physician, % | 42.5 (11.3) |
| No. of years at the practice, no. | 12.5 (5.2) |
| Visits at the practice with the regular physician, % | 81.8 (16.7) |
Note: SD = standard deviation.