Table 1.
Baseline Characteristics
| Total (n = 114) | Motivational Interviewing (n = 55) | Health Education (n = 59) | Pa | |
|---|---|---|---|---|
| Age, mean (SD) | 35.9 (10.3) | 37 (1.4) | 34.7 (1.4) | .32 |
| Sex: male, n (%) | 91 (80 %) | 43 (78%) | 48 (81%) | .67 |
| Ethnicity: white European, n (%) | 53 (47%) | 26 (47%) | 27 (46%) | .87 |
| Duration of illness, years (SD) | 7.8 (6.4) | 6.8 (5.6) | 8.8 (6.9) | .11 |
| Number of psychiatric admissions, mean (SD) | 3.8 (4.2) | 3.6 (5.3) | 4.0 (3.0) | .71 |
| Diagnosis | .99 | |||
| Schizophrenia, n (%) | 87 (76.3) | 42 (76.4) | 45 (76.3) | |
| Schizoaffective disorder, n (%) | 27 (23.7) | 13 (23.6) | 14 (23.7) | |
| Medication at baseline, n (%) | .48 | |||
| First-generation antipsychotic | 38 (33%) | 17 (31%) | 21 (36%) | |
| Second-generation antipsychotic | 70 (62%) | 36 (65%) | 34 (58%) | |
| Other (mood stabilizer) | 6 (5%) | 2 (4%) | 4 (6%) | |
| Medication administration route, n (%) | .14 | |||
| Oral | 85 (75%) | 44 (80%) | 41 (70%) | |
| Depot | 29 (25%) | 11 (20%) | 18 (30%) | |
| PANSS total, mean (SD) | 71.8 (18.9) | 71.9 (20.9) | 70.2 (15.8) | .64 |
| Cannabis-positive urine sample, n (%) | 14b (24%) | 5 (16%) | 9 (33%) | .11 |
Note: PANSS, Positive and Negative Syndrome Scale.
aChi-square tests for dichotomous variables; t tests for continuous variables.
bAvailable N = 59.