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Table 3 Odds ratios (OR) and their 95% confidence intervals (CI) of risky sexual behaviours by substance use behaviours among adolescents in bivariate and multivariate analyses

From: Substance use and risky sexual behaviours among sexually experienced Ghanaian youth

Health behaviour Ever had sexual intercourse Condom use Number of sexual partners* Ever had sexual intercourse Condom use Number of sexual partners*
  Model 1 Model 1 Model 1 Model 2** Model 2** Model 2**
  OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
    One Multiple    One Multiple
Smoking         
No 1.0 1.0 1.0 1.0 1.0   1.0 1.0
Yes 4.1 (2.3-7.2) 1.4 (0.7-2.6) 9.5 (4.6-19.3) 17.7 (8.4-37.3) 3.7 (2.0-6.8)   8.4 (3.7-18.8) 16.5 (7.0-39.0)
Tawa use         
No 1.0 1.0 1.0 1.0 1.0   1.0 1.0
Yes 3.7 (2.1-6.7) 1.3 (0.7-2.5) 9.8 (4.7-20.8) 16.6 (7.6-36.3) 2.4 (1.3-4.7)   5.7 (2.5-12.8) 10.4 (4.4-24.6)
Tabocco use         
No 1.0 1.0 1.0 1.0 1.0   1.0 1.0
Yes 3.5 (2.2-5.5) 1.3 (0.8-2.3) 8.3 (4.7-14.8) 16.4 (9.0-29.8) 2.8 (1.7-4.7)   6.3 (3.3-11.9) 13.7 (6.9-26.9)
Drunkenness         
Less often or never 1.0 1.0 1.0 1.0 1.0   1.0 1.0
Often (once or weak or more often) 2.1 (1.4-3.3) 1.4 (0.8-2.4) 2.1 (1.3-3.3) 4.4 (2.6-7.3) 1.7 (1.1-2.8)   1.7 (1.1-2.8) 3.3 (1.9-5.8)
Marijuana use         
No 1.0 1.0 1.0 1.0 1.0   1.0 1.0
Yes 4.8 (2.4-9.7) 1.2 (0.6-2.6) 6.5 (2.6-16.2) 24.4 (10.4-57.2) 3.3 (1.6-7.0)   4.5 (1.7-11.6) 17.1 (6.7-43.3)
Other drug use         
No 1.0 1.0 1.0 1.0 1.0   1.0 1.0
Yes 2.2 (1.1-4.6) 1.9 (0.8-4.1) 6.0 (2.4-15.1) 20.5 (8.6-48.7) 1.2 (0.6-2.8)   3.0 (1.1-8.2) 9.1 (3.5-24.0)
  1. *Multinomial logistic regression analysis, reference group is none (no sexual partner).
  2. **Adjusted for age, gender, place of residence, material affluence scale, family structure, school performance and plans after graduation.
  3. Statistical significance level was set at p < 0.05.