Patient characteristics.
| Study practices, n = 1397 | External reference practices, n = 1350 | P-value | |
|---|---|---|---|
| Sex, % male/female | 39.0/61.0 | 39.4/60.6 | 0.83 |
| Age in years, mean (SD) | 45.1 (16.7) | 47.2 (18.2) | 0.001 |
| Complexity of the diagnosis, % low/high | 40.6/59.4 | 47.0/53.0 | 0.001 |