TABLE 3.
Model 1,a OR (95% CI) | Model 2, OR (95% CI) | Model 3, OR (95% CI) | Model 4,a OR (95% CI) | Model 5,a OR (95% CI) | |
Sociodemographic characteristics | |||||
Gender | |||||
Girls (Ref) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
Boys | 1.4** (1.2, 1.7) | 1.5** (1.3, 1.9) | 1.6** (1.3, 2.0) | 1.6** (1.3, 1.9) | 1.6** (1.3, 2.0) |
Race/ethnicity | |||||
Non-Hispanic Black (Ref) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
Non-Hispanic White | 3.7** (2.5, 5.4) | 3.5** (2.3, 5.3) | 4.1** (2.6, 6.5) | 4.1** (2.6, 6.5) | 4.2** (2.6, 6.7) |
Hispanic | 3.4** (2.3, 5.0) | 3.4** (2.2, 5.4) | 4.3** (2.7, 6.9) | 4.3** (2.7, 6.9) | 4.5** (2.8, 7.3) |
Other | 5.3** (3.4, 8.3) | 5.1** (3.1, 8.4) | 6.0** (3.5, 10.3) | 5.6** (3.3, 9.6) | 6.1** (3.5, 10.4) |
Grade | |||||
6 (Ref) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
7 | 1.4 (0.9, 2.2) | 1.0 (0.6, 1.5) | 0.8 (0.5, 1.4) | 0.8 (0.5, 1.4) | 0.8 (0.5, 1.3) |
8 | 2.7** (1.8, 4.1) | 1.4 (0.9, 2.1) | 1.2 (0.8, 1.9) | 1.2 (0.8, 1.9) | 1.2 (0.7, 1.8) |
9 | 3.8** (2.5, 5.8) | 1.7 (1.1, 2.7) | 1.5 (0.9, 2.3) | 1.5 (0.9, 2.4) | 1.4 (0.9, 2.2) |
10 | 4.1** (2.7, 6.2) | 1.6* (1.0, 2.4) | 1.4 (0.9, 2.1) | 1.4 (0.9, 2.2) | 1.3 (0.8, 2.1) |
11 | 5.4** (3.6, 8.1) | 2.1** (1.3, 3.2) | 1.9** (1.2, 2.9) | 1.8** (1.2, 2.9) | 1.8** (1.1, 2.7) |
12 | 8.3** (5.5, 12.6) | 3.1** (2.0, 4.9) | 2.9** (1.8, 4.5) | 2.9** (1.8, 4.6) | 2.8** (1.8, 4.4) |
Cigarette use | |||||
History of cigarette use | 16.3** (12.1, 22.0) | 14.9** (10.9, 20.4) | 15.4** (11.3, 21.0) | 14.3** (10.4, 19.5) | |
Attitudes toward cigarette use | |||||
Helps relieve stress | 2.5** (1.9, 3.3) | 1.8** (1.4, 2.3) | |||
Helps make social situations more comfortable | 2.2** (1.7, 2.7) | 2.1** (1.5, 2.7) |
Note. CI = confidence interval; OR = odds ratio. Sample size was n = 8995.
Model significant at P < .05.
*P <.10; **P < .05.