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Prevalence of Alcohol Use and Average Volume of Use in the Prior 12 Months by Grade
| Grade | Total N | % N First Use | % N Any Use | Average Volume of use | SD |
|---|---|---|---|---|---|
| 6 | 202 | 53 (107) | 53 (107) | 3.29 | 12.41 |
| 7 | 200 | 14 (27) | 49 (98) | 4.54 | 15.04 |
| 8 | 203 | 11 (23) | 58 (117) | 6.54 | 18.37 |
| 9 | 202 | 6 (13) | 63 (127) | 26.60 | 70.34 |
| 10 | 200 | 2 (4) | 66 (131) | 90.23 | 279.97 |
| 11 | 202 | 6 (12) | 79 (159) | 153.10 | 361.41 |
| 12 | 201 | 3 (6) | 84 (169) | 165.27 | 165.27 |
