Table 3. Percentages of subjects partaking in risky consumption and binge drinking at age 20, 22, 24 and 27 years, among subjects already partaking in each of these consumption patterns at age 18.
| Females | Males | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Risky consumption | Binge drinking | Risky consumption | Binge drinking | |||||||||||||
| Age | Age | Age | Age | |||||||||||||
| 20 | 22 | 24 | 27 | 20 | 22 | 24 | 27 | 20 | 22 | 24 | 27 | 20 | 22 | 24 | 27–28 | |
| Maternal educational level | ||||||||||||||||
| Primary school | 74.3 (136) | 58.9 (95) | 18.0 (61) | 30.3 (76) | 36.2 (47) | 25.8 (31) | 0 (21) | 21.4 (26) | 87.9 (33) | 65.4 (26) | 28.6 (14) | 33.3 (18) | 81.8 (22) | 52.9 (17) | 27.3 (11) | 36.4 (11) |
| High school | 79.6 (113) | 59.0 (78) | 20.0 (40) | 26.0 (50) | 52.5 (40) | 32.0 (25) | 7.1 (14) | 23.5 (17) | 79.3 (29) | 85.0 (20) | 12.5 (8) | 54.5 (11) | 84.2 (19) | 80.0 (15) | 20.0 (5) | 50.0 (8) |
| University | 84.2 (95) | 70.3 (74) | 17.5 (40) | 40.4 (52) | 59.4 (32) | 44.0 (25) | 7.1 (14) | 11.5 (14) | 90.0 (50) | 68.8 (32) | 47.4 (19) | 47.6 (21) | 63.6 (33) | 64.7 (17) | 44.4 (9) | 27.3 (11) |
| Residence | ||||||||||||||||
| In parental home | 72.3 (65) | 53.3 (45) | 16.7 (30) | 27.6 (29) | 47.6 (21) | 25.0 (12) | 10.0 (10) | 19.6 (6) | 82.1 (28) | 73.7 (19) | 45.5 (11) | 27.3 (11) | 68.4 (19) | 75.0 (12) | 42.9 (7) | 16.7 (6) |
| Away from home | 80.3 (279) | 64.4 (202) | 18.9 (111) | 32.9 (149) | 48.0 (98) | 34.8 (69) | 2.6 (39) | 0 (51) | 87.1 (85) | 71.7 (60) | 32.3 (31) | 48.7 (39) | 76.8 (56) | 63.2 (38) | 31.6 (19) | 41.7 (24) |
| Positive expectancies about alcohol | ||||||||||||||||
| Low | 72.6 (62) | 47.6 (42) | 12.5 (24) | 25.0 (32) | 25.0 (16) | 20.0 (10) | 0 (6) | 16.7 (6) | 87.5 (16) | 53.8 (13) | 22.2 (9) | 57.1 (7) | 87.5 (8) | 16.7 (6) | 20.0 (5) | 75.0 (4) |
| Medium | 77.7 (121) | 57.4 (94) | 21.8 (55) | 27.1 (69) | 45.7 (35) | 26.9 (26) | 0 (14) | 10.5 (19) | 83.3 (36) | 69.2 (26) | 54.5 (11) | 62.5 (16) | 72.7 (22) | 71.4 (14) | 50.0 (6) | 28.8 (7) |
| High | 79.8 (124) | 71.3* (87) | 17.0 (47) | 42.4* (59) | 58.0 (50) | 36.4 (33) | 5 (20) | 13.0 (23) | 87.5 (48) | 77.4 (31) | 33.0 (18) | 27.3 (22) | 72.7 (33) | 77.3* (22) | 25.0 (12) | 35.7 (14) |
| Age of onset of alcohol use | ||||||||||||||||
| After age 16 | 76.5 (34) | 72.2 (18) | 22.2 (9) | 7.7 (13) | 28.6 (7) | 60.0 (5) | 50 (2) | 0 (4) | 100 (11) | 66.7 (9) | 20.0 (5) | 33.3 (6) | 71.4 (7) | 50.0 (6) | 33.3 (3) | 50.0 (4) |
| Age 16 | 79.8 (119) | 56.0 (84) | 17.3 (52) | 29.5 (61) | 46.4 (28) | 18.8 (16) | 9.1 (11) | 8.3 (12) | 87.8 (41) | 83.9 (31) | 50.0 (22) | 40.0 (25) | 70.8 (24) | 72.2 (18) | 42.9 (14) | 42.9 (14) |
| Age 15 | 81.9 (105) | 66.2 (67) | 13.0 (46) | 31.6 (57) | 50.0 (40) | 35.7 (28) | 0 (18) | 23.8 (21) | 82.6 (23) | 56.2 (16) | 22.2 (9) | 33.3 (9) | 66.7 (15) | 66.7 (9) | 40.0 (5) | 0 (5) |
| Before age 15 | 75.0 (84) | 63.6 (66) | 28.1 (32) | 40.0 (45) | 51.2 (43) | 35.5 (31) | 0* (17) | 15.8 (9) | 91.2 (34) | 75.0 (20) | 0 (5) | 62.5 (8) | 82.1 (28) | 68.8 (16) | 0 (3) | 33.3 (6) |
|
Total of subjects 95% Cl: Lower Upper |
78.8 74.5 83.7 |
62.3 56.3 68.4 |
18.4 12.0 24.8 |
32.0+ 25.2 38.9 |
47.9 38.9 56.9 |
33.3 23.1 43.6 |
4.1 0.0 9.6 |
17.5+ 7.7 27.4 |
86.0 79.6 92.3 |
72.2 62.3 82.0 |
35.7 21.2 50.5 |
44.0+ 30.2 57.8 |
74.7 68.4 84.5 |
66.0 52.9 79.1 |
34.6 16.3 52.9 |
36.7+ 19.4 53.9 |
Note: The total number of subjects is shown between brackets.
*Significant differences among categories of exposition. χ2 test, p<0.05.
+Significant differences among ages. χ2 test, p<0.05.