Characteristics of General Practitioners and Patients
| Characteristic | Overall | Group | P Value | |
|---|---|---|---|---|
| Intervention | Control | |||
| General practitioners, No. | 77 | 40 | 37 | |
| Men, No. (%) | 42 (54.6) | 23 (57.5) | 19 (51.3) | .59 |
| Age, mean (SD), y | 48.3 (9.2) | 47.8 (9.0) | 48.9 (9.5) | .60 |
| Group practice, No. (%)a | 51 (66.2) | 27 (67.5) | 24 (64.9) | .81 |
| Self-employed, No. (%) | 65 (85.5) | 32 (82.1) | 33 (89.2) | .38 |
| Teaching role, No. (%)b | 32 (41.6) | 18 (45.0) | 14 (37.9) | .52 |
| Work setting | ||||
| Rural, No. (%) | 9 (11.7) | 4 (10.0) | 5 (13.5) | .73 |
| Semirural, No. (%) | 37 (48.0) | 18 (45.0) | 19 (51.4) | |
| Urban, No. (%) | 31 (40.3) | 18 (45.0) | 13 (35.1) | |
| Number of patients enrolled, mean (SD) | 3.4 (2.1) | 3.5 (2.2) | 3.3 (2.0) | .60 |
| Patients, No. | 262 | 141 | 121 | |
| Men, No. (%) | 169 (64.5) | 89 (63.1) | 80 (66.1) | .61 |
| Age | ||||
| Mean (SD), y | 20.60 (2.6) | 20.88 (2.7) | 20.28 (2.6) | .07 |
| <18 y, No. (%) | 47 (18.0) | 20 (14.3) | 27 (22.3) | .09 |
| Marital status, No. (%) | ||||
| Single | 211 (81.2) | 108 (77.7) | 103 (84.3) | .31 |
| Married | 49 (18.9) | 31 (22.3) | 18 (14.9) | |
| Divorced/separated | 2 (0.8) | 1 (0.7) | 1 (0.9) | |
| Lodging status, No. (%) | ||||
| Cohabiting | 202 (77.1) | 106 (75.2) | 96 (79.3) | .42 |
| Living alone | 63 (24.1) | 37 (26.2) | 26 (21.5) | .37 |
| Employment status, No. (%) | ||||
| Working | 147 (56.1) | 82 (58.2) | 65 (53.7) | .07 |
| No occupation | 7 (2.7) | 5 (3.6) | 2 (1.7) | |
| Student | 108 (41.2) | 54 (38.3) | 54 (44.6) | |
| Psychotropic medication use, No. (%)c | 10 (3.8) | 6 (4.3) | 4 (3.3) | .69 |
| Cannabis use | ||||
| Joints per mo, median (IQR) | 20 (6–60) | 30 (6–80) | 20 (5–40) | .08 |
| ≥30 joints per mo, No. (%) | 121 (46.2) | 73 (51.8) | 48 (39.7) | .05 |
| Use bongs, No. (%) | 39 (14.9) | 27 (19.2) | 12 (9.9) | .04 |
| Age at first use, mean (SD), y | 15.15 (1.9) | 15.24 (2.1) | 15.04 (1.6) | .40 |
| Alcohol use | ||||
| Used in past month, No. (%) | 204 (77.9) | 110 (78.0) | 94 (77.7) | .94 |
| Quantity: glasses/wk, median (IQR) | 6 (2–10) | 5 (2–10) | 7.5 (3–14) | .02 |
| Tobacco use | ||||
| Used in past month, No. (%) | 240 (91.6) | 124 (87.9) | 116 (95.7) | .02 |
| Quantity: cigarettes/wk, median (IQR) | 60 (30–82) | 60 (35–100) | 60 (28–78) | .60 |
| Experimented with other drugs, No. (%) | 111 (42.4) | 59 (41.8) | 52 (43.0) | .85 |