Table 1.

Demographic characterization of the sample

Variable	PI group (n = 46)	Comparison group (n = 43)	Statistic
Sex	33 female; 13 male	22 female; 21 male	χ₍₁₎² = 3.986, p = 0.046
Age (years)^{^a}	12.35 (2.56); 7.58–16.42	11.83 (3.27); 7.08–16.92	t₍₈₇₎ = 0.833, p = 0.407
IQ^{^a}	104.80 (15.82); 69–142	112.86 (16.09); 84–146	t₍₈₇₎ = 1.439, p = 0.15
Pubertal status^{^b}	2.48 (0.85); 1–4	2.20 (0.80), 1–3.6	t₍₇₃₎ = 2.381, p = 0.019
Origin	1 Africa, 4 Central America, 17 East Asia, 1 South Asia, 21 Europe, 2 unknown
Age adopted (months)^{^a}	31.40 (30.10); 3–120

↵^aValues reported as mean (SD); range.
↵^bPuberty was assessed using the Pubertal Scale of Development (parent report) and was obtained for 41 PI youth and 34 comparison youth.