Table 3.
Prevalence of sexual behaviors among HPV-related OPC cases, by age
| N | Younger N= 35 | Middle-Aged N= 96 | Older N= 32 | P-value | |
|---|---|---|---|---|---|
| Ever perform oral sex | 163 | 100% | 99% | 97% | 0.49 |
| Age of sexual debut: median (IQR) | 162 | 16 (15, 17) | 16 (15, 18) | 18 (17, 20) | <0.001 |
| Age of first performing oral sex on a woman (among heterosexual men): median (IQR) | 133 | 17 (16, 18) | 18(17, 21) | 21(19, 25) | <0.001 |
| First sexual act | |||||
| Vaginal sex only | 158 | 47% | 67% | 82% | 0.028 |
| Vaginal and performed oral sex | 44% | 25% | 9% | ||
| Performed oral sex only | 9% | 8% | 9% | ||
| Lifetime number of sexual partners | |||||
| Open mouth kissing partners: median (IQR) | 161 | 30 (20–75) | 28 (10–50) | 27 (9–51) | 0.93 |
| Vaginal sex: median (IQR) | 157 | 18 (10–49) | 19 (7–30) | 12 (6–30) | 0.93 |
| Performed oral sex on: median (IQR) | 163 | 10 (8–25) | 8 (3–25) | 10 (3–20) | 0.77 |
| Intensity of sexual exposure (sex-years)^ | Median (IQR) | ||||
| Vaginal sex: median (IQR) | 157 | 5.6 (3.3, 16.6) | 4.2 (1.71, 7.5) | 2.2 (1.17, 5.9) | 0.08 |
| Oral sex: median (IQR) | 162 | 3.6 (2.6, 8.3) | 2.0 (0.82, 6.6) | 1.9 (0.48, 4.2) | 0.003 |
| Anal sex: median (IQR) | 161 | 0.6 (0.30, 1.3) | 0.25 (0.00, 0.8) | 0.17 (0.00, 0.4) | <0.001 |
^
Number of lifetime partners per 10 years of age after sexual debut)