Table 2 Outcome analyses of AUDIT scores: proportions of probable dependence; harmful use, hazardous use, non-risky use, trajectories (no change, impaired, improved), total and subscale ratings
|  | Intervention groups (n = 59) | Control group (n = 29) | ||
|---|---|---|---|---|
Total (n = 59) | Brief (n = 26) | Extensive (n = 33) | ||
AUDIT, probable dependence (%) | ||||
 Baseline | 33 (56) | 15 (58) | 18 (55) | 16 (55) |
 Follow-up | 11 (19) | 5 (19) | 6 (18) | 6 (21) |
AUDIT, harmful use (%) | ||||
 Baseline | 12 (20) | 7 (27) | 5 (15) | 8 (28) |
 Follow-up | 7 (12) | 3 (12) | 4 (12) | 6 (21) |
AUDIT, hazardous use (%) | ||||
 Baseline | 14 (24) | 4 (15) | 10 (30) | 5 (17) |
 Follow-up | 26 (44) | 14 (54) | 12 (36) | 11 (37) |
AUDIT, non-risky use (%) | ||||
 Baseline | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
 Follow-up | 15 (25) | 4 (15) | 11 (34) | 6 (21) |
AUDIT, trajectories (%) | ||||
 No change | 19 (32) | 9 (35) | 10 (30) | 10 (34) |
 Impaired | 1 (2) | 1 (4) | 0 (0) | 2 (7) |
 Improved | 39 (66) | 16 (61) | 23 (70) | 17 (59) |
AUDIT, total score, mean (SD) | ||||
 Baseline | 20.8 (5.9) | 21.3 (5.8) | 20.3 (6.1) | 20.2 (4.6) |
 Follow-up | 12.5 (8.5) | 14.1 (7.3) | 11.2 (9.3) | 13.7 (8.3) |
 Change score | − 8.3 (7.7) | − 7.2 (8.1) | − 9.1 (7.4) | − 6.5 (9.3) |
 ANCOVA, b (95% CI) | ||||
  Intervention vs. control | − 1.5 (− 5.1; 2.0) | − 1.6 (− 4.4; 4.1) | − 2.6 (− 6.8; 1.6) |  |
  Extensive vs. brief |  |  | − 2.2 (− 6.2; 1.8) |  |
AUDIT-C score, mean (SD) | ||||
 Baseline | 8.5 (2.0) | 8.7 (1.9) | 8.3 (2.0) | 8.7 (1.8) |
 Follow-up | 5.1 (3.3) | 5.5 (2.8) | 4.8 (3.6) | 6.2 (3.5) |
 Change score | − 3.4 (3.4) | − 3.1 (3.0) | − 3.6 (3.6) | − 2.5 (3.5) |
 ANCOVA, b (95% CI) | ||||
  Intervention vs. control | − 1.0 (− 2.5; 0.5) | − 0.6 (− 2.3; 1.1) | − 1.3 (− 3.0; 0.5) |  |
  Extensive vs. brief |  |  | − 0.6 (− 2.3; 1.0) |  |
Alcohol problem scale, mean (SD) | ||||
 Baseline | 12.3 (4.5) | 12.7 (4.4) | 12.0 (4.7) | 11.5 (3.6) |
 Follow-up | 7.4 (5.7) | 8.6 (5.3) | 6.5 (5.9) | 7.6 (5.3) |
 Change score | − 4.9 (5.1) | − 4.1 (5.8) | − 5.6 (4.4) | − 4.0 (6.0) |
 ANCOVA, b (95% CI) | ||||
  Intervention vs. control | − 0.6 (− 1.7; 2.9) | − 0.7 (− 3.6; 2.2) | − 1.4 (4.0; 1.2) |  |
  Extensive vs. brief |  |  | − 1.7 (− 4.2; 0.9) |  |