| Occasions of consuming four or more drinks in a row in the previous 2 weeks | n = 2530 | | n = 3479 | |
| Nil | 64 | (63 to 66) | 70 | (68 to 71) |
| 1 | 15 | (14 to 17) | 14 | (13 to 16) |
| ⩾ 2 (defined as binge drinking) | 20 | (19 to 22) | 16 | (15 to 17) |
| Habitual frequency of alcohol consumption in last year | n = 2569 | | n = 3512 | |
| Every day | 2 | (1 to 3) | 1 | (1 to 2) |
| Four or five times per week | 4 | (3 to 5) | 4 | (3 to 4) |
| Two or three times per week | 20 | (18 to 21) | 16 | (15 to 17) |
| About once per week | 30 | (28 to 32) | 28 | (26 to 29) |
| About once per month | 15 | (13 to 16) | 13 | (12 to 15) |
| Special occasions only | 21 | (19 to 22) | 29 | (28 to 31) |
| Never drink | 9 | (8 to 10) | 9 | (8 to 10) |
| Alcohol consumed in the previous week (units) | n = 2342 | | n = 3084 | |
| 0 | 33 | (31 to 35) | 40 | (38 to 41) |
| 1–4 | 27 | (25 to 29) | 35 | (34 to 37) |
| 5–9 | 18 | (17 to 20) | 16 | (15 to 17) |
| 10–14 | 10 | (9 to 12) | 5 | (5 to 6) |
| 15 or more | 12 | (10 to 13) | 4 | (3 to 5) |
| Father’s social class at 16 years | n = 3387 | | n = 3783 | |
| I or II | 36 | (34 to 37) | 34 | (32 to 35) |
| III A or B | 46 | (45 to 48) | 48 | (46 to 49) |
| IV or V or others | 18 | (17 to 20) | 19 | (17 to 20) |
| Maternal education | n = 3068 | | n = 3455 | |
| Achieved A levels or higher degree | 22 | (20 to 23) | 20 | (19 to 21) |