Table 4.
Article overview and demographics as reported in studies.
| References | Country of origin | Self-identification | Participants | Sample size | Age (mean ± SD in years) | Level of evidence | |
|---|---|---|---|---|---|---|---|
| Resulting from systematic literature research | Fredriksen-Goldsen et al. (36) | USA | LGBT | 174 (7%) trans 2,372 (93%) non-trans |
N = 2,560 | Total: 66.47 ± 9.08 Trans: 60.97 ± 7.96 Non-trans: 66.87 ± 9.03 |
4 |
| Wilson (37) | USA | Trans or cis gender | 43 (5.8%) trans men 135 (18.2%) trans women 111 (14.9%) cis men 290 (39.0%) cis women 121 (16.3%) genderqueer/androgynous 43 (5.8%) other |
N = 743 | Total: 35.00 ± 10.84 | 4 | |
| Perez-Brumer et al. (38) | USA | Transgender | 532 (43.29%) trans men 697 (56.71%) trans women |
N = 1,229 | Total: 32.74 ± 11.96 | 4 | |
| Testa et al. (17) | USA | Transgender identity | 251 (29.8%) trans men 138 (16.4%) trans women 97 (11.5%) women 251 (29.8%) men 184 (21.9%) gender-queer 9 (1.1%) cross-dresser |
N = 844 | Trans women: 36.81 ± 14.54 Trans men: 31.19 ± 11.46 Cis Women: 36.81 ± 14.54 Cis Men: 31.47 ± 10.61 Gender-queer: 27.26 ± 10.11 Cross-dresser: 40.50 ± 17.00 |
4 | |
| Marshall et al. (39) | Argentina | Trans men or trans women | 44 (9.1%) trans men 438 (90.9%) trans women |
N = 482 | Total Median: 30.00 Interquartile range (IQR): 25–37 |
4 | |
| Tebbe and Moradi (40) | USA | Trans identity | 90 (26.9%) trans men 110 (32.8%) trans women 129 (38.2%) gender-non-conforming |
N = 329 | Total: 25.21 ± 6.58 | 4 | |
| Hoy-Ellis and Fredriksen-Goldsen (41) | USA | Transgender | 50 (35.97%) trans men 89 (64.03%) trans women |
N = 174 | Total: 60.97 ± 7.96 | 4 | |
| Testa et al. (42) | USA | Transgender | 372 (45.6%) trans men 252 (30.9%) trans women 148 (18.1%) female to different gender 37 (4.5%) male to different gender 7 (0.9%) intersex |
N = 816 | Total: 32.53 ± 13.13 | 4 | |
| Timmins et al. (43) | UK | Transgender | 346 (28.6%) trans men 377 (31.2%) trans women 484 (47.1%) non-binary |
N = 1,207 | Total: 28.50 | 4 | |
| Staples et al. (44) | USA | Transgender | 132 (55.9%) other 58 (24.6%) trans men 24 (10.2%) trans women 22 (9.3%) non-binary |
N = 237 | Total: 28.00 ± 6.90 | 4 | |
| Sapareto (45) | USA | Transgender | Gender assigned at birth: 12 (41.38%) male 17 (58.62%) female |
N = 29 | Not reported | 4 | |
| Resulting from additional sources | Brennan et al. (46) | USA | Individuals who identify as a gender different than the sex assigned to them at birth | 24 (29%) trans men 33 (40%) trans women 26 (31%) other gender-non-conforming identity |
N = 83 | Range: 19–70 | 4 |
| Jäggi et al. (47) | CH | Trans identity | 43 (30%) trans masculine 75 (52%) trans feminine 26 (18%) non binary |
N = 143 | Trans feminine: 51.5 ± 17.1 Trans masculine: 36.0 ± 12.8 Non-binary: 42.2 ± 24.4 |
4 | |
| Scandurra et al. (48) | IT | Transgender identity | 75 (50.3%) transgender women 74 (49.7%) transgender men |
N = 149 | Transgender women: 37.2 ± 12.2 Transgender men: 29.2 ± 7.8 |