Table 1.
Risk of Oral Human Papillomavirus (HPV) Infection Associated With Each Sexual Behavior, by Participant Sex
| Characteristic | Univariate HR (95% CI) |
P interaction | |
|---|---|---|---|
| Men | Women | ||
| Recently a performed any oral sex | |||
| No | 1.00 | 1.00 | .010 |
| Yes | 3.15 (1.42–6.98) | 0.66 (.27–1.64) | |
| Recent a no. of people performed oral sex on | |||
| 0 | 1.00 | 1.00 | .052 |
| 1 | 3.02 (1.34–6.80) | 0.56 (.22–1.43) | |
| 2 | 3.07 (1.06–8.87) | 1.13 (.39–3.23) | |
| ≥3 | 4.54 (1.39–14.83) | 0.95 (.19–4.80) | |
| Ptrend | .001 | .86 | |
| Lifetime no. of people performed oral sex on | |||
| ≤2 | 1.00 | 1.00 | .071 |
| 3–5 | 1.46 (.68–3.12) | 0.44 (.21–.94) | |
| ≥6 | 1.00 (.45–2.21) | 0.57 (.25–1.28) | |
| Ptrend | .88 | .037 | |
| Lifetime no. of vaginal sex partners | |||
| ≤2 | 1.00 | 1.00 | .037 |
| 3–5 | 0.52 (.17–1.55) | 0.37 (.14–.95) | |
| ≥6 | 1.15 (.54–2.44) | 0.31 (.13–.71) | |
| Ptrend | .22 | .003 | |
| Recent a performance of cunnilingus | |||
| No | 1.00 | 1.00 | .042 |
| Yes | 2.52 (1.27–5.02) | 0.77 (.31–1.95) | |
| Recent a performance of fellatio | |||
| No | 1.00 | 1.00 | .333 |
| Yes | 0.85 (.29–2.54) | 0.43 (.17–1.08) | |
| Sexual orientation | |||
| Heterosexual | 1.00 | 1.00 | .494 |
| Homosexual/bisexual | 0.75 (.25–2.30) | 1.17 (.53–2.54) | |
P values were considered statistically significance at an α of ≤0.05. Additional details abut participant enrollment, characteristics and eligibility are available elsewhere [ 12 ].
Abbreviations: CI, confidence interval; HR, hazard ratio.
a Defined as within the past 3 months.