Table 1

Characteristics of study participants

All (n=700)*HR-HPV positive (n=15)*HR-HPV negative (n=665)*OR for HR-HPV positivity (95% CI)
Age (year), n (%)
 18–25223 (31.9)2 (13.3)213 (32.0)0.71 (0.06 to 7.98)
 26–30106 (15.1)4 (26.7)101 (15.1)3.10 (0.33 to 27.48)
 31–40168 (24.0)5 (33.3)156 (23.5)2.43 (0.28 to 21.22)
 41–50123 (17.6)3 (20.0)119 (17.9)1.92 (0.20 to 18.75)
 51–6080 (11.4)1 (6.7)76 (11.4)1.0
Sex, n (%)
 Male424 (60.6)13 (86.7)397 (59.7)4.39 (0.98 to 19.60)
 Female276 (39.4)2 (13.3)268 (40.3)1.0
Smoking status, n (%)
 Never smoked407 (58.1)6 (40.0)389 (58.5)1.0
 Former smoker180 (25.7)8 (53.3)166 (25.0)3.12 (1.07 to 9.15)
 Current smoker113 (16.1)1 (6.7)110 (16.5)0.59 (0.07 to 4.95)
Units of alcohol per week, n (%)
 <1153 (21.9)4 (26.7)145 (21.8)1.0
 1–10241 (34.4)4 (26.7)233 (35.0)0.62 (0.15 to 2.53)
 >10≤20172 (24.6)1 (6.7)168 (25.3)0.22 (0.02 to 1.95)
 20+134 (19.1)6 (40.0)119 (17.9)1.83 (0.50 to 6.63)
 Mean (SD)11.8 (12.9)16.7 (19.2)11.5 (12.7)
No of sexual partners, n (%)
 0–5332 (47.4)2 (13.3)330 (49.6)1.0
 6–10173 (24.7)6 (40.0)167 (25.1)5.93 (1.18 to 29.69)
 11+157 (22.4)7 (46.7)150 (22.6)7.70 (1.58 to 37.51)
 No answer38 (5.4)0 (0)18 (2.7)
 Mean (SD)11.4 (38.3)14.4 (12.2)11.5 (39.3)
No of oral sexual partners, n (%)
 0–5496 (70.9)5 (33.3)474 (71.3)1.0
 6–10109 (15.6)8 (53.3)104 (15.6)7.29 (2.34 to 22.74)
 11+85 (12.1)2 (13.3)77 (11.6)2.46 (0.47 to 12.92)
 No answer10 (1.4)0 (0)10 (1.5)
 Mean (SD)6.6 (13.6)8.2 (7.0)6.6 (13.9)
Age at sexual debut (year)
 Mean17.73 (3.14)17.66 (3.15)17.78 (3.52)1.01 (0.86 to 1.20)
 Logistic regressionp=0.892
  • *Twenty oral rinse and gargle samples contained insufficient cellular material (measured through β-globulin) to determine HPV status and were therefore omitted.

  • HR- HPV, high-risk human papillomavirus. OR, odds ration. SD, standard deviation.