Table 1.

Longitudinal study sample demographics

	Boys		Girls
	Time 1	Time 2	Time 1	Time 2
Age	12.89 ±0.66 (n = 60)	14.91 ± 0.69 (n = 42)	11.83 ± 0.73 (n = 60)	14.04 ± 0.85 (n = 38)
Tanner Stage	2.90 ± 0.96 (n = 52)	4.36 ± 0.93 (n = 40)	2.65 ± 0.87 (n = 47)	4.63 ± 0.68 (n = 40)
Testosterone (T) (ng/mL)	199.81 ± 151.32 (n = 57)	390.14 ± 152.56 (n = 33)	45.89 ± 11.89 (n = 59)	59.14 ± 15.00 (n = 40)
Estradiol (E2) (pg/mL)	—	—	35.29 ± 17.31 (n = 57)	87.46 ± 59.26 (n = 44)

Number of subjects with usable imaging data are reported for each time point for each sex. Average and standard deviation are reported for age, as well as pubertal maturation indices (tanner stage, testosterone, and estradiol).