Table 4.
Logistic Regression Analysis Results for Predicting Nonuse of Condoms During Last Sexual Encounter, for Those Who Also Used Marijuana or Cracka
| Predictor Variables | Marijuana Model (n = 189) | Crack Model (n = 159) | ||
|---|---|---|---|---|
| Odds Ratio | 95% CI | Odds Ratio | 95% CI | |
| Use during last encounter | ||||
| Marijuana (1) | 1.4 | 0.62–3.05 | ||
| Crack (1) | 0.05 | 0.00–0.52 | ||
| Male (1) | 0.52 | 0.24–1.11 | 0.51 | 0.23–1.13 |
| Black (1) | 1.13 | 0.44–2.92 | ||
| In school (1) | 0.57 | 0.26–1.26 | ||
| Age first away (1–21) | 0.94 | 0.80–1.10 | 0.88 | 0.75–1.02 |
| Age first sex (3–18) | 0.85 | 0.72–0.99 | ||
| Dependence symptoms (0–5) | 1.13 | 0.89–1.42 | 1.34 | 1.02–1.76 |
| How little knew partner (1–3) | 0.65 | 0.40–1.04 | ||
| Did not talk about HIV (1) | 3.18 | 1.20–8.41 | ||
| Not motivated to use a condom (1) | 3.61 | 1.73–7.54 | 2.13 | 0.99–4.57 |
| Model χ2 | 44.3 | 23.4 | ||
| (df = 10; p < 0.001) | (df= 5; p < 0.001) | |||
a
Those who used marijuana or crack (coded 1) are compared to those who used no drugs (coded 0). Those who used more than one substance were not included in the models.