Characteristics of family physicians included in the trial
| Characteristic | Group; no. (%) of physicians* | |
|---|---|---|
| Intervention n = 17† | Control n = 16 | |
| Age group, yr | ||
| 36–45 | 8 (47) | 8 (50) |
| 46–55 | 8 (47) | 4 (25) |
| > 55 | 1 (6) | 4 (25) |
| Sex, male | 8 (47) | 11 (69) |
| Specialty in pediatrics‡ | 3 (18) | 2 (12) |
| No. of years in private practice, mean ± SD | 13.7 ± 2.3 | 9.2 ± 1.7 |
| Practice located in urban area, % | 12 (71) | 10 (62) |
| Moderate to extensive training (> 10 h) in topic before the study§ | ||
| Adolescent health | 6 (35) | 12 (75) |
| Communication | 5 (29) | 8 (50) |
| Motivational interviewing | 7 (54) | 7 (44) |
| Alcohol problems | 10 (59) | 11 (69) |
| Cannabis problems | 5 (29) | 6 (38) |
Note: SD = standard deviation.
↵* Unless stated otherwise.
↵† One physician dropped out of the study after randomization, before patient recruitment began.
↵‡ In Switzerland, family medicine practitioners also include general internists and pediatricians.
↵§ Physicians’ estimates (includes formal and informal training); data partially missing for 4 physicians.