Table 1.
Characteristics of Participating Transgender Women and Men Who Have Sex With Men, by Self-Reported Human Papillomavirus Vaccination History—Seattle, Washington, 2016–2018
| Participants, No. (%)a | ||||
|---|---|---|---|---|
| History of ≥1 HPV Vaccine Dose | ||||
| Characteristic | Total | No or Don’t Knowb | Yes | P Value |
| Total | 687 (100) | 339 (100) | 348 (100) | … |
| Age, y | ||||
| 18–21 | 178 (25.9) | 77 (22.7) | 101 (29.0) | .06c |
| 22–26 | 509 (74.1) | 262 (77.3) | 247 (71.0) | |
| Gender identity | ||||
| Male | 665 (96.8) | 326 (96.2) | 339 (97.4) | .59c |
| Female/transgender female | 6 (0.9) | 4 (1.2) | 2 (0.6) | |
| Other/unknown | 16 (2.3) | 9 (2.7) | 7 (2.0) | |
| Sexual orientation | ||||
| Gay/homosexual | 586 (85.3) | 296 (87.3) | 290 (83.3) | .26c |
| Straight/heterosexual | 4 (0.6) | 1 (0.3) | 3 (0.9) | |
| Other/unknown | 97 (14.1) | 42 (12.4) | 55 (15.8) | |
| Race and/or ethnicity | ||||
| Non-Hispanic white | 350 (50.9) | 172 (50.7) | 178 (51.1) | .80c |
| Non-Hispanic black | 43 (6.3) | 24 (7.1) | 19 (5.5) | |
| Asian/Pacific Islander | 119 (17.3) | 58 (17.1) | 61 (17.5) | |
| Hispanic | 135 (19.7) | 63 (18.6) | 72 (20.7) | |
| Other/unknownd | 40 (5.8) | 22 (6.5) | 18 (5.2) | |
| Circumcised | ||||
| Yes | 444 (64.6) | 213 (62.8) | 231 (66.4) | .52c |
| No | 235 (34.2) | 121 (35.7) | 114 (32.8) | |
| Unknown | 8 (1.2) | 5 (1.5) | 3 (0.9) | |
| History of PrEP for HIV prevention | ||||
| Yes | 150 (21.8) | 52 (15.3) | 98 (28.2) | <.01c |
| No or unknown | 537 (78.2) | 287 (84.7) | 250 (71.8) | |
| Most recent HIV test result | ||||
| Negative or unknown | 672 (97.8) | 337 (99.4) | 335 (96.3) | .007e |
| Positive | 15 (2.2) | 2 (0.6) | 13 (3.7) | |
| Lifetime no. of sex partners of any sex | ||||
| ≤5 | 47 (6.8) | 21 (6.2) | 26 (7.5) | .03c |
| 6–10 | 83 (12.1) | 37 (10.9) | 46 (13.2) | |
| 11–20 | 149 (21.7) | 86 (25.4) | 63 (18.1) | |
| >20 | 371 (54.0) | 171 (50.4) | 200 (57.5) | |
| Other/unknown | 37 (5.4) | 24 (7.1) | 13 (3.7) | |
| Lifetime no. of sex partners of any sex,f mean/median (IQR) | 45.3/25 (12–50) | 37.2/23 (13–41) | 52.8/29.5 (12–55) | .06g |
| Age at first sex with any partner,h mean/median (IQR), y | 16.8/17 (15–18) | 16.8/17 (15–18) | 16.8/17 (15–18) | .96g |
| Age at first HPV vaccination | ||||
| ≤18 y | … | … | 83 (23.9) | … |
| >18 y | … | … | 217 (62.4) | |
| Unknown | … | … | 48 (13.8) | |
| Age at first HPV vaccination, mean/median (IQR), yi | … | … | 20.4/21 (18–23) | … |
| First HPV vaccination relative to age at first sex | ||||
| Before first sex | … | … | 37 (10.6) | … |
| At or after first sex | … | … | 263 (75.6) | |
| Don’t know | … | … | 48 (13.8) | |
| No. of HPV vaccine doses received (by self-report) | ||||
| 1 | … | … | 50 (14.4) | … |
| 2 | 65 (18.7) | |||
| 3 | 179 (51.4) | |||
| Don’t know | 54 (15.5) | |||
Abbreviations: HIV, human immunodeficiency virus; HPV, human papillomavirus; IQR, interquartile range; PrEP, preexposure prophylaxis.
Data represent no. (%) of participants unless otherwise specified.
Includes 180 participants who reported “no” and 159 who reported “don’t know.”
Based on Pearson χ2 test.
Includes American Indian, Alaska Native, other race, >1 race, or unknown.
Based on Fisher exact test.
Includes 650 participants (315 in the “no or don’t know” group and 335 in the “yes” group).
Based on Wilcoxon rank-sum test.
Includes 685 participants (338 in the “no or don’t know” group and 347 in the “yes” group).
Includes 300 participants.