Table 1.
Percentages, Means and Standard Deviations of Cigarette Use in Last Year by Grade and Sex.
| Grade 9 | Grade 10 | Grade 11 | Grade 12 | |||||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Boys (n=372) | Girls (n=389) | Boys (n=373) | Girls (n=371) | Boys (n=266) | Girls (n=276) | Boys (n=181) | Girls (n=172) | |
| Did not smoke | 81.5 | 76.9 | 74.0 | 67.9 | 61.7 | 65.6 | 51.9 | 59.9 |
| Smoked once | 4.8 | 6.9 | 5.6 | 7.8 | 8.6 | 6.9 | 9.4 | 4.1 |
| Smoked a couple of times | 7.8 | 7.7 | 10.7 | 10.5 | 16.2 | 8.3 | 17.7 | 13.4 |
| Smoked some each month | 1.9 | 1.8 | 3.2 | 1.9 | 2.6 | 3.3 | 3.9 | 3.5 |
| Smoked some each week | 2.2 | 1.8 | 2.1 | 1.9 | 3.4 | 4.3 | 4.4 | 4.7 |
| Smoked some each day | 1.9 | 4.9 | 4.3 | 10.0 | 7.5 | 11.6 | 12.7 | 14.5 |
| M | .44 | .59 | .67 | .92 | 1.00 | 1.09 | 1.38 | 1.33 |
| SD | 1.07 | 1.30 | 1.32 | 1.62 | 1.55 | 1.77 | 1.78 | 1.88 |
Note. M = Mean; SD = Standard Deviation. Range for cigarette use in all grades is 0 to 5.