TABLE 1.
Characteristics of the TGNC Children and Adolescents Enrolled in the STRONG
| Child and Adolescent Characteristics | Transfeminine Cohort | Transmasculine Cohort | ||||
|---|---|---|---|---|---|---|
| Transfeminine Cohort, n (%) | Reference Males, n (%) | Reference Females, n (%) | Transmasculine Cohort, n (%) | Reference Males, n (%) | Reference Females, n (%) | |
| Age,a y | ||||||
| 3–9 | 161 (27) | 1605 (28) | 1598 (28) | 90 (12) | 892 (12) | 888 (12) |
| 10–17 | 427 (73) | 4206 (72) | 4204 (72) | 655 (88) | 6448 (88) | 6459 (88) |
| Health plan site | ||||||
| KPNC | 344 (59) | 3392 (58) | 3378 (58) | 431 (58) | 4238 (58) | 4245 (58) |
| KPSC | 227 (39) | 2249 (39) | 2254 (39) | 295 (40) | 2915 (40) | 2912 (40) |
| KPGA | 17 (2.9) | 170 (2.9) | 170 (2.9) | 19 (2.6) | 187 (2.6) | 190 (2.6) |
| Race and/or ethnicity | ||||||
| Non-Hispanic white | 268 (46) | 2633 (45) | 2629 (45) | 374 (50) | 3663 (50) | 3671 (50) |
| Non-Hispanic African American | 53 (9.0) | 523 (9.0) | 521 (9.0) | 57 (7.7) | 564 (7.7) | 564 (7.7) |
| Asian American and/or Pacific Islander | 37 (6.3) | 367 (6.3) | 370 (6.4) | 60 (8.1) | 596 (8.1) | 594 (8.1) |
| Hispanic | 179 (30) | 1779 (31) | 1772 (31) | 204 (27) | 2018 (27) | 2020 (27) |
| Other and/or unknown | 51 (8.7) | 509 (8.8) | 510 (8.8) | 50 (6.7) | 499 (6.8) | 498 (6.8) |
| Use ever before index date (average visits per y) | ||||||
| 0 | 22 (3.7) | 325 (5.6) | 321 (5.5) | 23 (3.1) | 367 (5.0) | 350 (4.8) |
| <1 | 15 (2.6) | 568 (9.8) | 530 (9.1) | 25 (3.4) | 763 (10) | 746 (10) |
| 1–3 | 127 (22) | 1815 (31) | 1879 (32) | 154 (21) | 2583 (35) | 2562 (35) |
| >3–6 | 171 (29) | 1712 (29) | 1781 (31) | 240 (32) | 2200 (30) | 2235 (30) |
| >6–9 | 115 (20) | 757 (13) | 763 (13) | 107 (14) | 795 (11) | 777 (11) |
| >9 | 137 (23) | 631 (11) | 528 (9.1) | 196 (26) | 630 (8.6) | 675 (9.2) |
| Unknown | 1 (0.2) | 3 (0.1) | 0 (0.0) | 0 (0.0) | 2 (0.0) | 2 (0.0) |
| Use 6 mo before index date (average visits per mo) | ||||||
| 0 | 101 (17) | 2225 (38) | 2062 (36) | 111 (15) | 2825 (39) | 2502 (34) |
| <1 | 258 (44) | 2846 (49) | 2903 (50) | 277 (37) | 3531 (48) | 3640 (50) |
| 1–2 | 141 (24) | 552 (9.5) | 625 (11) | 195 (26) | 757 (10) | 901 (12) |
| >2 | 87 (15) | 186 (3.2) | 212 (3.7) | 162 (22) | 225 (3.1) | 302 (4.1) |
| Unknown | 1 (0.2) | 2 (0.0) | 0 (0.0) | 0 (0.0) | 2 (0.0) | 2 (0.0) |
| Total | 588 (2.1) | 5811 (21) | 5802 (21) | 745 (2.7) | 7340 (27) | 7347 (27) |
KPGA, Kaiser Permanente Georgia; KPNC, Kaiser Permanente Northern California; KPSC, Kaiser Permanente Southern California.
a
Assessed at index date (date of first evidence of transgender status in EMRs).