Table 3.
Change of alcohol, tobacco, cannabis consumption and change in episodes of drunkenness (increased, unchanged, decreased) 5 months post-intervention (stratified by estimation of peer use at T0/T1).
| Stratified by estimation of peer use at baseline (T0) and follow-up (T1) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Total analysis group | Under-/accurately at T0 | Overestimated at T0 | Under-/accurately at T0 | Overestimated at T0 | ||||||
| (n = 1,255) | Under-/accurately at T1 | Under-/accurately at T1 | Overestimated at T0 | Overestimated at T1 | ||||||
| CG | IG | CG | IG | CG | IG | CG | IG | CG | IG | |
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
| Alcohol consumption | ||||||||||
| Increased | 211 (25.5) | 97 (22.8) | 6 (37.5) | 4 (30.8) | 7 (15.2) | 6 (13.3) | 17 (42.5) | 3 (17.6) | 160 (24.6) | 77 (25.4) |
| Unchanged | 466 (56.2) | 209 (49.1) | 5 (31.3) | 6 (46.2) | 32 (69.6) | 18 (40.0) | 14 (35.0) | 8 (47.1) | 374 (57.5) | 147 (48.5) |
| Decreased | 152 (18.3) | 120 (28.2) | 5 (31.3) | 3 (23.1) | 7 (15.2) | 21 (46.7) | 9 (22.5) | 6 (35.3) | 117 (18.0) | 79 (26.1) |
| Total | 829 (100) | 426 (100) | 16 (100) | 13 (100) | 46 (100) | 45 (100) | 40 (100) | 17 (100) | 651 (100) | 303 (100) |
| Tobacco consumption | ||||||||||
| Increased | 139 (16.8) | 54 (12.7) | 5 (12.8) | 2 (9.5) | 4 (8.0) | 3 (7.5) | 20 (17.4) | 4 (12.5) | 93 (17.4) | 39 (13.9) |
| Unchanged | 598 (72.1) | 338 (79.3) | 28 (71.8) | 18 (85.7) | 39 (78.0) | 34 (85.0) | 83 (72.2) | 26 (81.3) | 381 (71.2) | 216 (77.1) |
| Decreased | 92 (11.1) | 34 (8.0) | 6 (15.4) | 1 (4.8) | 7 (14.0) | 3 (7.5) | 12 (10.4) | 2 (6.3) | 61 (11.4) | 25 (8.9) |
| Total | 829 (100) | 426 (100) | 39 (100) | 21 (100) | 50 (100) | 40 (100) | 115 (100) | 32 (100) | 535 (100) | 280 (100) |
| Cannabis consumption | ||||||||||
| Increased | 113 (13.6) | 34 (8.0) | 23 (14.5) | 2 (2.7) | 13 (17.6) | 6 (11.8) | 12 (14.8) | 1 (5.0) | 50 (12.2) | 16 (7.3) |
| Unchanged | 647 (78.0) | 353 (82.9) | 118 (74.2) | 66 (89.2) | 59 (79.7) | 38 (74.5) | 66 (81.5) | 17 (85.0) | 325 (79.3) | 183 (83.6) |
| Decreased | 69 (8.3) | 39 (9.2) | 18 (11.3) | 6 (8.1) | 2 (2.7) | 7 (13.7) | 3 (3.7) | 2 (10.0) | 35 (8.5) | 20 (9.1) |
| Total | 829 (100) | 426 (100) | 159 (100) | 74 (100) | 74 (100) | 51 (100) | 81 (100) | 20 (100) | 535 (100) | 280 (100) |
| Episodes of drunkenness* | ||||||||||
| Increased | 147 (17.7) | 62 (14.6) | 4 (25.0) | 1 (7.7) | 4 (8.7) | 6 (13.3) | 15 (37.5) | 3 (17.6) | 112 (17.2) | 44 (14.5) |
| Unchanged | 472 (59.6) | 243 (57.0) | 9 (56.3) | 9 (69.2) | 31 (67.4) | 23 (51.1) | 17 (42.5) | 9 (52.9) | 366 (56.2) | 175 (57.8) |
| Decreased | 210 (25.3) | 121 (28.4) | 3 (18.8) | 3 (23.1) | 11 (23.9) | 16 (35.6) | 8 (20.0) | 5 (29.4) | 173 (26.6) | 84 (27.7) |
| Total | 829 (100) | 426 (100) | 16 (100) | 13 (100) | 46 (100) | 45 (100) | 40 (100) | 17 (100) | 651 (100) | 303 (100) |
CG, Control group; IG, Intervention group.
*
Stratified by estimation of frequency of alcohol use.