Multivariable models testing independent associations between predictors and lifetime number of sexual partners in women
| Predictor | Lifetime number of sexual partners in women (adjusted OR (95% CI))† | ||
| 2–4 (n=1170)‡ | 5–9 (n=486) | ≥10 (n=243) | |
| Age | 0.95 (0.93 to 0.96)*** | 0.90 (0.89 to 0.92)*** | 0.90 (0.88 to 0.92)*** |
| Partnership status§ | |||
| Separated/divorced | 6.98 (4.84 to 10.07)*** | 12.68 (8.39 to 19.16)*** | 14.53 (8.99 to 23.46)*** |
| Widowed | 1.73 (1.33 to 2.26)*** | 1.66 (1.08 to 2.55)* | 1.38 (0.72 to 2.65) |
| Single/never married | 1.56 (0.96 to 2.54) | 2.22 (1.26 to 3.89)** | 5.33 (2.93 to 9.67)*** |
| Sexual orientation¶ | |||
| Bisexual | 1.10 (0.70 to 1.74) | 2.09 (1.27 to 3.46)** | 5.87 (3.50 to 9.85)*** |
| Homosexual | 3.98 (0.59 to 26.70) | 5.61 (0.68 to 46.49) | 5.05 (0.47 to 54.57) |
| Non-white ethnicity†† | 0.35 (0.21 to 0.58)*** | 0.22 (0.11 to 0.46)*** | 0.11 (0.03 to 0.35)*** |
| Wealth quintile‡‡ | |||
| 2 | 0.97 (0.71 to 1.31) | 0.83 (0.55 to 1.25) | 0.90 (0.55 to 1.48) |
| 3 | 1.05 (0.77 to 1.43) | 0.90 (0.59 to 1.37) | 1.02 (0.60 to 1.74) |
| 4 | 0.83 (0.60 to 1.15) | 1.08 (0.71 to 1.66) | 0.74 (0.42 to 1.32) |
| 5 (richest) | 0.88 (0.63 to 1.23) | 1.15 (0.74 to 1.77) | 1.20 (0.69 to 2.10) |
| Smoking status§§ | |||
| Former smoker | 1.17 (0.78 to 1.73) | 1.78 (1.14 to 2.78)* | 2.24 (1.31 to 3.83)** |
| Current smoker | 1.53 (1.13 to 2.07) | 1.95 (1.34 to 2.83)*** | 3.18 (2.06 to 4.90)*** |
| Alcohol intake¶¶ | |||
| Regularly | 1.23 (0.98 to 1.54) | 2.20 (1.58 to 3.06)*** | 1.16 (0.78 to 1.75) |
| Frequently | 1.59 (1.23 to 2.07)** | 3.16 (2.18 to 4.56)*** | 2.17 (1.39 to 3.40)** |
| Physical activity††† | |||
| Moderately active at least once a week | 1.51 (1.18 to 1.92)** | 1.26 (0.90 to 1.76) | 1.68 (1.08 to 2.60)* |
| Vigorously active at least once a week | 1.60 (1.19 to 2.14)** | 1.74 (1.19 to 2.55)** | 1.73 (1.04 to 2.88)* |
| Limiting long-standing illness | 1.12 (0.91 to 1.38) | 1.53 (1.16 to 2.02)** | 1.58 (1.10 to 2.26)* |
All figures are weighted for sampling probabilities and differential non-response.
*P<0.05, **p<0.01, ***p<0.001.
†Multivariable multinomial logistic regression was performed. 0–1 sexual partners was the reference group in all analyses (n=1198).
‡Unweighted sample sizes. Models were performed on complete cases and as such the analysed sample number differs from the number included in the bivariate analyses.
§Reference category: married/cohabiting.
¶Reference category: heterosexual.
††Reference category: white.
‡‡Reference category: 1 (poorest).
§§Reference category: never smoker.
¶¶Reference category: never/rarely.
†††Reference category: inactive.