Longitudinal development of secondary sexual characteristics in girls and boys between ages 9½ and 15½ years
EJ Susman, RM Houts, L Steinberg… - … of pediatrics & …, 2010 - jamanetwork.com
Objectives To identify ages when adolescents were in sexual maturity stages 2 through 5; to
explain the relations between breast (girls), genital (boys), and pubic hair (girls and boys)
development between ages 9½ and 15½ years; and to evaluate synchrony of pubertal
development across characteristics. Design Annual pubertal assessments. Setting Ten
locations in the United States. Participants A total of 859 adolescents (427 boys [49.7%] and
432 girls [50.3%]; 737 white [85.8%] and 122 black [14.2%]). Main Outcome Measures …
explain the relations between breast (girls), genital (boys), and pubic hair (girls and boys)
development between ages 9½ and 15½ years; and to evaluate synchrony of pubertal
development across characteristics. Design Annual pubertal assessments. Setting Ten
locations in the United States. Participants A total of 859 adolescents (427 boys [49.7%] and
432 girls [50.3%]; 737 white [85.8%] and 122 black [14.2%]). Main Outcome Measures …