Table 1.
Characteristics of Participating Transgender Women and Gay, Bisexual, and Other Men Who Have Sex With Men, by HPV Vaccination History
| Characteristic | Total | Unvaccinated | Vaccinated | |
|---|---|---|---|---|
| N (%) | n (%) | n (%) | P | |
| Total | 1767* (100) | 687 (100) | 704** (100) | |
| City | ||||
| Chicago | 617 (34.9) | 271 (39.4) | 228 (32.4) | <.001 |
| Los Angeles | 446 (25.2) | 240 (34.9) | 123 (17.5) | |
| Seattle | 704 (39.8) | 176 (25.6) | 353 (50.1) | |
| Age, years | ||||
| 18–21 | 628 (35.5) | 211 (30.7) | 273 (38.8) | .003 |
| 22–26 | 1139 (64.5) | 476 (69.3) | 431 (61.2) | |
| Gender identity | ||||
| Male | 1671 (94.6) | 651 (94.8) | 667 (94.7) | .064 |
| Female/transgender female | 53 (3.0) | 26 (3.8) | 14 (2.0) | |
| Other/unknown | 43 (2.4) | 10 (1.5) | 23 (3.3) | |
| Race/ethnicity | ||||
| Non-Hispanic white | 545 (30.8) | 166 (24.2) | 264 (37.5) | <.001 |
| Non-Hispanic black | 261 (14.8) | 141 (20.5) | 77 (10.9) | |
| Asian/Pacific Islander | 136 (7.7) | 40 (5.8) | 67 (9.5) | |
| Hispanic | 557 (31.5) | 219 (31.9) | 200 (28.4) | |
| Other/unknown | 268 (15.2) | 121 (17.6) | 96 (13.6) | |
| Sexual orientation | ||||
| Gay/homosexual | 1295 (73.3) | 500 (72.8) | 513 (72.9) | .53 |
| Straight/heterosexual | 29 (1.6) | 15 (2.2) | 8 (1.1) | |
| Other/unknown | 443 (25.1) | 172 (25.0) | 183 (26.0) | |
| Lifetime number of sex partners of any sex | ||||
| ≤5 | 247 (14.0) | 105 (15.3) | 87 (12.4) | <.001 |
| 6–10 | 276 (15.6) | 124 (18.0) | 89 (12.6) | |
| 11–20 | 388 (22.0) | 159 (23.1) | 141 (20.0) | |
| >20 | 801 (45.3) | 283 (41.2) | 369 (52.4) | |
| Other/unknown | 55 (3.1) | 16 (2.3) | 18 (2.6) | |
| Lifetime number of sex partners of any sex (mean/median, IQR) | 41.2/21 (10–50) | 35.7/20 (10–40) | 48.9/25 (11–51) | <.001 |
| Most recent HIV test result | ||||
| Positive | 139 (7.9) | 52 (7.6) | 62 (8.8) | .42 |
| Negative or unknown | 1628 (92.1) | 635 (92.4) | 642 (91.2) | |
| Age at first HPV vaccination (mean/median, IQR) | -- | -- | 18.7/19 (16–22) | -- |
| Age at first sex with any partner (mean/median, IQR) | 15.8/16 (14–18) | 15.9/16 (14–18) | 15.7/16 (15–18) | .17 |
Abbreviations: HIV, human immunodeficiency virus; HPV, human papillomavirus; IQR, interquartile range.
NOTE: Bold font indicates significance of χ 2 analysis at P < .05.
*Three hundred seventy-six participants included in the total column were unsure of their HPV vaccination history or did not respond.
**Seven hundred four participants reported receiving at least 1 dose of HPV vaccine dose, including 335 who reported receiving 3 doses of HPV vaccine.