Multivariate analyses of determinants of condom breakage in the last month
| Variables significant in univariate analysis | Model 1 | Model 2 | Model 3 | |||
| Logistic regression adjusted OR and 95% CIs | p Value (Wald test) | Multi-level logistic regression adjusted OR and 95% CIs | p Value (Wald test) | Multi-level logistic regression adjusted OR and 95% CIs | p Value (Wald test) | |
| General profile | ||||||
| Age (years) | ||||||
| 18–24 (Ref) | 1 | 0.274 | 1 | 0.651 | ||
| ≥25 | 0.65 (0.30 to 1.41) | 0.82 (0.36 to 1.88) | ||||
| Literate | ||||||
| No (Ref) | 1 | 0.316 | 1 | 0.117 | ||
| Yes | 0.75 (0.42 to 1.32) | 0.62 (0.34 to 1.12) | ||||
| Usual place of entertainment | ||||||
| Public place (Ref) | 1 | 1 | ||||
| Own home/friend's home | 1.19 (0.29 to 4.97) | 0.808 | 1.49 (0.35 to 6.30) | 0.587 | ||
| Lodge/rented room/brothel | 2.05 (0.51 to 8.28) | 0.316 | 1.68 (0.41 to 6.91) | 0.466 | ||
| Sexual history | ||||||
| Age at sexual debut (years) | ||||||
| 12–15 (Ref) | 1 | 0.058 | 1 | 0.444 | ||
| >15 | 0.58 (0.33 to 1.02) | 0.79 (0.44 to 1.42) | ||||
| Age at first paid sex (years) | ||||||
| 12–20 (Ref) | 1 | 0.050 | 1 | 0.749 | ||
| >20 | 0.50 (0.25 to 1.00) | 0.88 (0.41 to 1.88) | ||||
| Risk behaviours | ||||||
| Alcohol use in last month | ||||||
| Never or less than once a week (Ref) | 1 | 0.001 | 1 | 0.377 | ||
| At least once per week | 3.01 (1.60 to 5.66) | 1.33 (0.72 to 2.53) | ||||
| Forced into sex in last year | ||||||
| No (Ref) | 1 | <0.001 | 1 | 0.218 | ||
| Yes | 3.73 (1.81 to 7.69) | 1.51 (0.78 to 2.95) | ||||
| Ever been arrested? | ||||||
| No (Ref) | 1 | 0.430 | 1 | 0.266 | ||
| Yes | 1.48 (0.56 to 3.90) | 1.69 (0.66 to 4.31) | ||||
| Clients per week | ||||||
| <15 (ref) | 1 | 0.034 | 1 | 0.829 | ||
| ≥15 | 0.46 (0.22 to 0.94) | 0.92 (0.46 to 1.85) | ||||
| Circumstances of specific event | ||||||
| Partner | ||||||
| Spouse or non-paying client (Ref) | 1 | 0.023 | 1 | 0.025 | ||
| Paying client | 4.51 (1.22 to 16.5) | 4.61 (1.20 to 17.58) | ||||
| Man's use of alcohol before or during sex | ||||||
| No (Ref) | 1 | 0.788 | 1 | 0.738 | ||
| Yes | 1.08 (0.60 to 1.92) | 0.89 (0.47 to 1.68) | ||||
| Roughness of sex | ||||||
| Not rough (Ref) | 1 | <0.001 | 1 | <0.001 | ||
| Rough, forceful | 5.68 (3.26 to 9.00) | 6.39 (3.55 to 11.52) | ||||
| How long sex lasted | ||||||
| No longer than usual (Ref) | 1 | 0.057 | 1 | 0.110 | ||
| Longer than usual | 1.71 (0.98 to 2.98) | 1.61 (0.89 to 2.92) | ||||
| Erection | ||||||
| Not overly hard (Ref) | 1 | 0.100 | 1 | 0.135 | ||
| Overly hard | 1.58 (0.91 to 2.74) | 1.55 (0.87 to 2.75) | ||||
| Furtive sex | ||||||
| No (Ref) | 1 | 0.045 | 1 | 0.164 | ||
| Yes | 1.83 (1.01 to 3.32) | 1.56 (0.83 to 2.92) | ||||
| Size of condom | ||||||
| About right (Ref) | 1 | 1 | ||||
| Too small | 2.72 (1.25 to 5.90) | 0.011 | 2.29 (0.97 to 5.40) | 0.056 | ||
| Too big | 4.67 (1.75 to 12.43) | 0.002 | 4.29 (1.43 to 12.80) | 0.009 | ||