Baseline data of sociodemographic characteristics, sexual behaviour, STI diagnosis and new HIV diagnosis according to self-identified gender of TGP-AMAB visiting the public health service of Amsterdam and The Hague, the Netherlands, January 2017–December 2018, comparing SWs versus NSWs
| Sex work in past 6 months (n=16 missing)* | SWs n=137 (53.3%) n (%) | NSWs n=120 (46.7%) n (%) | P value | Total N=257 n (%) |
| Demographics | ||||
| Median age in years (IQR) | 38 (31–47) | 29 (24–36) | <0.001 | 33 (27–44) |
| Education (n=11 missing) | <0.001 | |||
| Low | 12 (9.2) | 13 (11.2) | 25 (10.2) | |
| Middle | 15 (11.5) | 38 (32.8) | 53 (21.5) | |
| High | 16 (12.3) | 39 (33.6) | 55 (22.4) | |
| Other | 87 (66.9) | 26 (22.4) | 113 (45.9) | |
| Ethnic origin† | <0.001 | |||
| The Netherlands | 16 (11.7) | 33 (27.5) | 49 (19.1) | |
| Asia | 16 (11.7) | 25 (20.8) | 41 (16.0) | |
| Africa | 4 (2.9) | 5 (4.2) | 9 (3.5) | |
| Latin America and the Caribbean | 84 (61.3) | 37 (30.8) | 121 (47.1) | |
| Europe | 17 (12.4) | 19 (15.8) | 36 (14.0) | |
| Unknown | 0 | 1 (0.8) | 1 (0.4) | |
| Gender-affirming surgery | ||||
| Vagina construction | 34 (24.8) | 12 (10.0) | 0.002 | 46 (17.9) |
| Sexual behaviour in past 6 months | ||||
| Median number of sex partners (IQR)‡ (n=26 missing) | 155 (3–400) | 4 (2–10) | <0.001 | 15 (4–200) |
| Sex with | 0.029 | |||
| Men | 123 (89.8) | 97 (80.8) | 220 (85.6) | |
| Women | 0 | 4 (3.3) | 4 (1.6) | |
| Both | 14 (10.2) | 19 (15.8) | 33 (12.8) | |
| Partner type (n=27 missing) | 0.002 | |||
| Steady only | 1 (0.7) | 9 (8.3) | 10 (4.1) | |
| Casual only | 83 (60.6) | 69 (63.3) | 152 (61.8) | |
| Steady and casual | 53 (38.7) | 29 (26.6) | 82 (33.3) | |
| No sex | 0 | 2 (1.8) | 2 (0.8) | |
| Giving fellatio§ | ||||
| Giving condomless fellatio (n=26 missing) | 70/98 (71.4) | 71/73 (97.3) | <0.001 | 141/171 (82.5) |
| Anal sex | ||||
| Condomless receptive anal sex¶ (n=31 missing) | 62/111 (55.9) | 58/83 (69.9) | 0.053 | 120/194 (61.9) |
| Condomless insertive anal sex** (n=31 missing) | 42/80 (52.5) | 27/40 (67.5) | 0.170 | 69/120 (57.5) |
| Vaginal sex†† (n=14 missing) | ||||
| Condomless vaginal sex | 29/41 (70.7) | 16/23 (69.6) | 0.999 | 45/64 (70.3) |
| Bacterial STI | ||||
| Any bacterial STI‡‡ (n=1 missing) | 16/137 (11.7) | 23/119 (19.3) | 0.116 | 39/256 (15.2) |
| Chlamydia | 11/137 (8.0) | 12/119 (10.1) | 0.663 | 23/256 (9.0) |
| Pharyngeal | 1/137 (0.7) | 2/110 (1.8) | 0.587 | 3/247 (1.2) |
| Rectal | 8/136 (5.9) | 9/113 (8.0) | 0.616 | 17/249 (6.8) |
| Urethral (penis) | 1/103 (1.0) | 4/107 (3.7) | 0.369 | 5/210 (2.4) |
| Urethral (vagina) | 1/34 (2.9) | 1/12 (8.3) | 0.999 | 2/46 (4.3) |
| Gonorrhoea | 7/137 (5.1) | 9/119 (7.6) | 0.291 | 16/256 (6.2) |
| Pharyngeal | 3/137 (2.2) | 5/112 (4.5) | 0.473 | 8/249 (3.2) |
| Rectal | 5/136 (3.7) | 6/113 (5.3) | 0.553 | 11/249 (4.4) |
| Urethral (penis) | 0/103 | 0/107 | 0/210 | |
| Urethral (vagina) | 0/34 | 0/12 | 0/46 | |
| Infectious syphilis | 1/136 (0.7) | 3/117 (2.6) | 0.338 | 4/253 (1.6) |
| HIV (n=1 missng) | 0.204 | |||
| Opt-out | 1/137 (0.7) | 4/119 (3.4) | 5/256 (2.0) | |
| Known positive | 20/137 (14.6) | 16/119 (13.4) | 36/256 (14.1) | |
| Negative tested | 116/137 (84.7) | 97/119 (81.5) | 213/256 (83.2) | |
| Positive tested | 0 | 2/119 (1.7)§§ | 2/256 (0.8) |
*n=16 excluded from analysis.
†Ethnicity was defined according to Statistics Netherlands on the basis of country of birth, maternal and paternal countries of birth.26
‡Giving fellatio, vaginal and/or anal sex.
§Among those who reported giving fellatio (only data from Amsterdam).
¶Among those who reported receptive anal sex with men.
**Among those who reported insertive anal sex and currently having a penis.
††Among those who reported vaginal sex and currently having a vagina and having sex with men or if currently having a penis and having sex with women.
‡‡Bacterial STI: chlamydia, gonorrhoea and/or infectious syphilis.
§§New diagnoses among NSWs, TGP-AMAB who have been tested for HIV 2.0% (2/99).
NSW, non-sex worker; SW, sex worker; TGP-AMAB, transgender people assigned male at birth.