TABLE 1

Characteristics of the TGNC Children and Adolescents Enrolled in the STRONG

Child and Adolescent CharacteristicsTransfeminine CohortTransmasculine 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)
 10–17427 (73)4206 (72)4204 (72)655 (88)6448 (88)6459 (88)
Health plan site
 KPNC344 (59)3392 (58)3378 (58)431 (58)4238 (58)4245 (58)
 KPSC227 (39)2249 (39)2254 (39)295 (40)2915 (40)2912 (40)
 KPGA17 (2.9)170 (2.9)170 (2.9)19 (2.6)187 (2.6)190 (2.6)
Race and/or ethnicity
 Non-Hispanic white268 (46)2633 (45)2629 (45)374 (50)3663 (50)3671 (50)
 Non-Hispanic African American53 (9.0)523 (9.0)521 (9.0)57 (7.7)564 (7.7)564 (7.7)
 Asian American and/or Pacific Islander37 (6.3)367 (6.3)370 (6.4)60 (8.1)596 (8.1)594 (8.1)
 Hispanic179 (30)1779 (31)1772 (31)204 (27)2018 (27)2020 (27)
 Other and/or unknown51 (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)
 022 (3.7)325 (5.6)321 (5.5)23 (3.1)367 (5.0)350 (4.8)
 <115 (2.6)568 (9.8)530 (9.1)25 (3.4)763 (10)746 (10)
 1–3127 (22)1815 (31)1879 (32)154 (21)2583 (35)2562 (35)
 >3–6171 (29)1712 (29)1781 (31)240 (32)2200 (30)2235 (30)
 >6–9115 (20)757 (13)763 (13)107 (14)795 (11)777 (11)
 >9137 (23)631 (11)528 (9.1)196 (26)630 (8.6)675 (9.2)
 Unknown1 (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)
 0101 (17)2225 (38)2062 (36)111 (15)2825 (39)2502 (34)
 <1258 (44)2846 (49)2903 (50)277 (37)3531 (48)3640 (50)
 1–2141 (24)552 (9.5)625 (11)195 (26)757 (10)901 (12)
 >287 (15)186 (3.2)212 (3.7)162 (22)225 (3.1)302 (4.1)
 Unknown1 (0.2)2 (0.0)0 (0.0)0 (0.0)2 (0.0)2 (0.0)
Total588 (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).