Factors associated with the uptake of HPV vaccine among 1134 gay and bisexual men who have sex with men attending the Melbourne Sexual Health Centre
| Variables | Individuals offered HPV vaccine (N=1134), n | Proportion of HPV vaccine uptake (N=830), n (%) | Crude OR (95% Cl) | P values | Adjusted OR (95% Cl) | P values |
| Demographic characteristics | ||||||
| Age group | ||||||
| 16–19 | 46 | 25 (54.3) | 1 | Ref | 1 | Ref |
| 20–26 | 1088 | 805 (74.0) | 2.39 (1.32 to 4.34) | 0.004 | 2.21 (1.20 to 4.06) | 0.011 |
| Country of birth | ||||||
| Overseas | 516 | 361 (70.0) | 1 | Ref | 1 | Ref |
| Australia | 592 | 452 (76.4) | 1.39 (1.06 to 1.81) | 0.017 | 1.25 (0.95 to 1.66) | 0.112 |
| No information | 26 | 17 (65.4) | 0.81 (0.35 to 1.86) | 0.621 | 0.72 (0.30 to 1.70) | 0.449 |
| Indigenous origin | ||||||
| Indigenous origin* | 15 | 8 (53.3) | 1 | Ref | ||
| Non-Indigenous origin | 1014 | 744 (73.4) | 2.41 (0.87 to 6.71) | 0.092 | ||
| No information | 105 | 78 (74.3) | 2.53 (0.84 to 7.63) | 0.100 | ||
| Sexual history | ||||||
| History of genital warts | ||||||
| No | 1066 | 769 (72.1) | 1 | Ref | 1 | Ref |
| Yes | 68 | 61 (89.7) | 3.37 (1.52 to 7.44) | 0.003 | 3.11 (1.39 to 6.99) | 0.006 |
| Number of partners in the last 12 months | ||||||
| ≤4 | 603 | 426 (70.6) | 1 | Ref | 1 | Ref |
| >4 | 531 | 404 (76.1) | 1.32 (1.01 to 1.72) | 0.039 | 1.38 (1.04 to 1.85) | 0.027 |
| Condom use in the last 12 months† | ||||||
| Consistent | 305 | 205 (67.2) | 1 | Ref | 1 | Ref |
| Inconsistent | 674 | 495 (73.4) | 1.35 (1.01 to 1.81) | 0.046 | 1.15 (0.85 to 1.56) | 0.375 |
| No information | 155 | 130 (83.9) | 2.54 (1.55 to 4.14) | <0.001 | 3.01 (1.74 to 5.20) | <0.001 |
| Sexual practice‡ | ||||||
| Bisexual | 78 | 48 (61.5) | 1 | Ref | 1 | Ref |
| Homosexual | 1056 | 782 (74.1) | 1.78 (1.11 to 2.87) | 0.017 | 1.61 (0.98 to 2.63) | 0.059 |
| Current sex worker | ||||||
| No | 1012 | 725 (71.6) | 1 | Ref | ||
| Yes | 12 | 10 (83.3) | 1.98 (0.43 to 9.09) | 0.380 | ||
| No information | 110 | 95 (86.4) | 2.51 (1.43 to 4.40) | 0.001 | ||
| Currently taking PrEP | ||||||
| No | 916 | 660 (72.1) | 1 | Ref | 1 | Ref |
| Yes | 79 | 68 (86.1) | 2.40 (1.25 to 4.61) | 0.009 | 2.14 (0.99 to 4.63) | 0.064 |
| No information/not applicable§ | 139 | 102 (73.4) | 1.07 (0.71 to 1.60) | 0.744 | 0.86 (0.55 to 1.34) | 0.347 |
| HIV status | ||||||
| Negative | 1099 | 804 (73.2) | 1 | Ref | ||
| Positive | 35 | 26 (74.3) | 1.06 (0.49 to 2.29) | 0.882 | ||
*Aboriginal and Torres Strait Islanders.
†Inconsistent condom use was defined as men who sometimes or never used condoms in the last 12 months; consistent condom use was defined as men who always used condoms in the last 12 months.
‡Homosexual men were defined as men who have sex with men only in the last 12 months, while bisexual men were defined as men who have sex with men and women in the last 12 months.
§Known HIV-positive men were categorised as not applicable for PrEP.
CI, confidence interval; HPV, human papillomavirus; OR, odds ratio; PrEP, pre-exposure prophylaxis; ref, reference.