Table 1.

Distribution of the study population by sex.

Cities	Children		Adolescents
	Male	Female	Male	Female
Buenos Aires	n = 31; 7 (6–10)	n = 30; 7 (3–10)	n = 20; 13 (11–16)	n = 27; 12 (11–16)
Lima	n = 4; 4 (3–5)	n = 6; 8(4–10)	n = 8; 14 (12–16)	n = 9; 15 (12–16)
Medellin	n = 42; 5 (3–10)	n = 98; 5(3–10)	n = 25; 17 (11–18)	n = 46; 16 (11–18)
São Paulo	n = 21; 5 (3–10)	n = 20; 5 (3–10)	n = 18; 13 (12–17)	n = 16; 14 (12–17)
Teresina	n = 13; 6(4–10)	n = 14; 7 (3–10)	n = 5; 15 (11–18)	n = 21; 12 (11–18)

Median age in years (range).