Adjusted odds ratios and confidence intervals for having had sex, had unprotected sex or having had more than one sexual partner in Ibiza
| Had sex | Had unprotected sex* | Had >1 sexual partner | ||||
|---|---|---|---|---|---|---|
| AOR | (95% CI) | AOR | (95% CI) | AOR | (95% CI) | |
| *Had unprotected sex identifies individuals that did not use a condom every time they had sex in Ibiza. | ||||||
| Reference categories for each variable are identified with (ref). Statistics utilise a stepwise logistic regression analysis with variables that are not significant (p⩾0.05) being removed from the model and subsequently the model recalculated. Such factors are identified with “NS.” Analyses of having had unprotected sex and sex with more than one partner in Ibiza are both limited to individuals who had sex while abroad. | ||||||
| Age | ||||||
| (ref) 26–35 | 1 | 1 | 1 | |||
| 20–25 | 2.12 | (1.42 to 3.16) | NS | − | NS | − |
| 16–19 | 1.51 | (1.07 to 2.14) | NS | − | NS | − |
| Sex | ||||||
| (ref) Female | 1 | 1 | 1 | |||
| Male | NS | − | NS | − | 1.79 | (1.18 to 2.70) |
| Substance use in Ibiza | ||||||
| No alcohol | 1 | 1 | 1 | |||
| Used alcohol | NS | − | NS | − | NS | − |
| No tobacco | 1 | 1 | 1 | |||
| Used tobacco | NS | − | 1.48 | (1.06 to 2.14) | 1.89 | (1.18 to 2.70) |
| No illicit drugs | 1 | 1 | 1 | |||
| Used illicit drugs | 1.37 | (1.05 to 1.79) | NS | − | NS | − |
| Length of stay | ||||||
| (ref) 1–7 days | 1 | 1 | 1 | |||
| 8–14 days | NS | − | NS | − | 1.67 | (1.11 to 2.50) |
| over 14 days | NS | − | NS | − | 2.80 | (1.02 to 7.28) |
| Year | ||||||
| (ref) 2000 | 1 | 1 | 1 | |||
| 2001 | NS | − | 2.18 | (1.30 to 3.65) | 0.64 | (0.39 to 1.15) |
| 2002 | NS | − | 1.18 | (0.81 to 1.71) | 0.53 | (0.34 to 0.81) |
| Received sexual health information | ||||||
| (ref) No | 1 | 1 | 1 | |||
| Yes | NS | − | NS | − | NS | − |
| Holiday with partner | ||||||
| (ref) No | 1 | 1 | 1 | |||
| Yes | 7.54 | (5.21 to 10.89) | 3.04 | (1.96 to 4.73) | 0.08 | (0.05 to 0.13) |
| Sexual partners in 6 months before Ibiza | ||||||
| (ref) None | 1 | 1 | 1 | |||
| 1 | 1.88 | (1.23 to 2.89) | 2.00 | (0.91 to 4.41) | 3.25 | (1.34 to 7.89) |
| 2–5 | 3.76 | (2.43 to 5.82) | 2.17 | (0.98 to 4.81) | 4.31 | (1.81 to 10.24) |
| 6 or more | 14.96 | (7.45 to 30.05) | 4.39 | (1.80 to 10.72) | 25.78 | (8.88 to 74.89) |