Table 3.
Means (and Standard Deviations) of alcohol use and alcohol misuse by onset group
| Earliest Onset (n=1,017) | Grade 10 Onset (n=426) | Grade 12 Onset (n=126) | School Non-Drinker (n=69) | Non-Drinker (n=100) | ANOVA/t-test (F/t) | |
|---|---|---|---|---|---|---|
| Grade 5/6 | ||||||
| Alcohol Use | 1.4 (6.6) | na | na | na | na | – |
| Alcohol Misuse | 1.3 (2.6) | na | na | na | na | – |
| Grade 6/7 | ||||||
| Alcohol Use | 3.0 (13.6) | na | na | na | na | – |
| Alcohol Misuse | 1.6 (2.8) | na | na | na | na | – |
| Grade 7/8 | ||||||
| Alcohol Use | 6.3 (25.1) | na | na | na | na | – |
| Alcohol Misuse | 2.8 (4.0) | na | na | na | na | – |
| Grade 10 | ||||||
| Alcohol Use | 13.8 (36.6) | 6.6 (22.6) | na | na | na | 4.07b |
| Alcohol Misuse | 4.4 (4.9) | 2.6 (3.7) | na | na | na | 6.86b |
| Grade 12 | ||||||
| Alcohol Use | 20.0 (37.6) | 11.6 (27.1) | 10.7 (26.7) | na | na | 6.91c |
| Alcohol Misuse | 5.6 (5.1) | 4.2 (5.2) | 3.4 (4.8) | na | na | 12.53b |
| Young Adult | ||||||
| Alcohol Usea | 15.7 (21.5) | 10.7 (15.1) | 11.4 (21.3) | 6.7 (9.6) | na | 10.28b |
| Alcohol Misusea | 2.4 (2.4) | 1.8 (2.1) | 1.8 (2.1) | 1.4 (2.4) | na | 11.30b |
a
Young adult alcohol use and alcohol misuse items differed from similar items on school surveys.
b
p<0.0001.
c
p<0.01.
na Had not used alcohol.