Lifetime and current tobacco use by year with combined grades 7– 8, 9–12, 7–12: 1999 Massachusetts Prevalence Study with comparison to 1996
| Grades 7–8 | Grades 9–12 | Grades 7–12 | ||||
|---|---|---|---|---|---|---|
| 1996 (n=2046) | 1999 (n=2354) | 1996 (n=3633) | 1999 (n=3472) | 1996 (n=5679) | 1999 (n=5826) | |
| Cell entries are percentages of students reporting use. Numbers in parentheses are 95% confidence intervals. | ||||||
| *Significant difference between 1996 and 1999 at p<0.05 (design adjusted χ2). | ||||||
| **Significant difference between 1996 and 1999 at p<0.01 (design adjusted χ2). | ||||||
| †Used at least once in lifetime. | ||||||
| ‡Used at least once in 30 days before survey. | ||||||
| Lifetime† | ||||||
| Cigarettes | 34.0 | 24.0** | 55.4 | 52.0 | 48.3 | 41.9** |
| (29.0 to 39.4) | (21.5 to 26.8) | (52.6 to 58.1) | (49.5 to 54.5) | (45.6 to 50.9) | (40.0 to 43.9) | |
| Smokeless tobacco | 8.9 | 4.3** | 20.2 | 13.0** | 16.5 | 9.9* |
| (6.1 to 12.9) | (3.5 to 5.4) | (17.7 to 23.0) | (10.9 to 15.4) | (14.5 to 18.7) | (8.9 to 11.4) | |
| Cigars | 22.3 | 17.5** | 39.2 | 37.6 | 33.6 | 30.4 |
| (19.2 to 25.9) | (15.3 to 20.0) | (35.9 to 42.5) | (35.0 to 40.1) | (31.1 to 36.1) | (28.5 to 32.3) | |
| Current‡ | ||||||
| Cigarettes | 21.0 | 12.6** | 35.6 | 29.9** | 30.7 | 23.7** |
| (16.8 to 25.8) | (10.6 to 14.9) | (32.8 to 38.4) | (27.5 to 32.5) | (28.4 to 33.1) | (21.9 to 25.6) | |
| Smokeless tobacco | 2.4 | 1.4 | 5.6 | 3.3** | 4.5 | 2.6* |
| (1.5 to 3.7) | (0.9 to 2.1) | (4.6 to 6.7) | (2.5 to 4.3) | (3.8 to 5.3) | (2.0 to 3.3) | |
| Cigars | 7.6 | 4.2 | 14.5 | 11.1** | 12.2 | 8.6* |
| (4.9 to 11.5) | (3.2 to 5.3) | (12.6 to 16.6) | (9.9 to 12.4) | (10.6 to 14.0) | (7.9 to 9.5) | |