TABLE 1

Age at Different Treatment Milestones and Intelligence by Gender

VariableAll Participantsa (N = 55)Transwomen (Natal Males) (N = 22)Transmen (Natal Females) (N = 33)
Age, yMean (SD)RangeMean (SD)Mean (SD)
 At assessment PreT13.6 (1.9)11.1–17.013.6 (1.8)13.7 (2.0)
 At start of GnRHa14.8 (1.8)11.5–18.514.8 (2.0)14.9 (1.9)
 At start of CSH16.7 (1.1)13.9–19.016.5 (1.3)16.8 (1.0)
 At GRS19.2 (0.9)18.0–21.319.6 (0.9)19.0 (0.8)
 At assessment PostT20.7 (1.0)19.5–22.821.0 (1.1)20.5 (0.8)
Full-scale intelligenceb99.0 (14.3)70–12897.8 (14.2)100.4 (14.3)
  • PostT, post-treatment; PreT, pre-treatment.

  • a Comparisons between those who had complete data (n = 40) and those who had missing data on the CBCL/ABCL (n = 15) reveal no significant differences between the groups in age at any point in the study or in natal sex.

  • b WISC-R, the WISC-III, or the WAIS-III at first assessment, depending on age and time.4547