Gender affirmation status of the STRONG transgender cohort members
| Gender affirmation evidence and type | Overall transgender cohort, n (%) | TF cohort, n (%)* | TM cohort, n (%)* |
| Evidence of treatment | |||
| Any† | 4040 (63) | 2244 (65) | 1792 (62) |
| None | 2416 (37) | 1231 (35) | 1100 (38) |
| Cross-sex hormone therapy | |||
| Specific evidence at KP | 3544 (55) | 2030 (58) | 1514 (52) |
| Evidence in the text only | 187 (2.9) | 112 (3.2) | 72 (2.5) |
| No evidence | 2725 (42) | 1333 (38) | 1306 (45) |
| Gender affirmation surgery | |||
| Top surgery at KP only | 369 (5.7) | 12 (0.3) | 357 (12) |
| Orchiectomy at KP with or without top | 52 (0.8) | 52 (1.5) | 0 (0) |
| Hysterectomy and/or oophorectomy at KP with or without top | 311 (4.8) | 0 (0) | 311 (11) |
| Genital reconstruction at KP with or without other surgery | 299 (4.6) | 181 (5.2) | 118 (4.1) |
| Evidence in the text only | 432 (6.7) | 253 (7.3) | 179 (6.2) |
| No evidence | 4993 (77) | 2977 (86) | 1927 (67) |
| Procedures to alter secondary sex characteristics | |||
| Specific evidence at KP | 678 (11) | 385 (11) | 293 (10) |
| Evidence in the text only | 58 (0.9) | 52 (1.5) | 6 (0.2) |
| No evidence | 5720 (89) | 3038 (87) | 2593 (90) |
| Total | 6456 (100) | 3475 (100) | 2892 (100) |
*Excludes 89 persons with unknown natal sex.
†Includes non-specific history and referral for treatment.
KP, Kaiser Permanente; STRONG, Study of Transition, Outcomes and Gender; TF, transfeminine; TM, transmasculine.