Table 4. Prevalence and logistic regression models among participants asked both sexual identity questions: substance use outcomes, female sample.
| Response option categories | Cigarette use in past 30 days | Binge drinking in past 2 weeks | Marijuana use in past year | Other illicit drug use in past yeara | ||||
|---|---|---|---|---|---|---|---|---|
| % | AORb (95% CI) | % | AORb (95% CI) | % | AORb (95% CI) | % | AORb (95% CI) | |
| Three-category sexual identity | ||||||||
| Heterosexual | 17.3 | – | 51.0 | – | 34.5 | – | 7.5 | – |
| Bisexual | 37.9 | 2.9 (1.3, 6.2)** | 51.7 | 1.0 (0.5, 2.0) | 69.0 | 4.1 (1.9, 9.2)** | 24.1 | 4.0 (1.7, 9.8)** |
| Lesbian | 44.4 | 3.7 (1.0, 13.9) | 44.4 | 0.7 (0.2, 2.7) | 55.6 | 2.3 (0.6, 8.6) | 22.2 | 3.3 (0.7, 16.3) |
| 1249 | 1237 | 1209 | 1216 | |||||
| Five-category sexual identity | ||||||||
| Only heterosexual | 15.6 | – | 49.9 | – | 32.2 | – | 6.1 | – |
| Mostly heterosexual | 31.7 | 2.5 (1.7, 3.8)*** | 56.3 | 1.3 (0.9, 1.9) | 57.1 | 2.8 (1.9, 4.1)*** | 19.0 | 3.6 (2.1, 6.1)*** |
| Bisexual | 28.6 | 2.2 (0.8, 5.7) | 42.9 | 0.8 (0.3, 1.8) | 52.4 | 2.4 (1.0, 5.7) | 28.6 | 6.5 (2.4, 17.7)*** |
| Mostly lesbian | 33.3 | 2.5 (0.5, 14.0) | 50.0 | 0.9 (0.2, 4.7) | 50.0 | 1.8 (0.4, 9.3) | 33.3 | 6.2 (1.1, 35.4)* |
| Only lesbian | 60.0 | 8.0 (1.3, 48.7)* | 40.0 | 0.6 (0.1, 3.7) | 80.0 | 8.4 (0.9, 77.1) | 0.0 | – |
| 1208 | 1201 | 1200 | 1207 | |||||
Note: The dash (–) indicates reference group. Sample sizes ranged from 1200 (marijuana use in past year, five-category measure) to 1249 (cigarette use in past 30 days, three-category measure) due to missing responses. The model for other illicit drug use for the five-category measure did not converge due to the zero cell
*
p<.05
**
p<.01
***
p<.001
a
Other illicit drug use consisted of any use of cocaine, LSD, other psychedelics, amphetamines, crystal methamphetamine, heroin, inhalants, ecstasy, GHB or Rohypnol
b
Odds ratios were adjusted for race and class year. The results for these variables are not shown