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Health News # 566-Girls Are Reaching Puberty Early

Data for the study were collected by 225 physicians in suburban practices who recorded the physical growth of 17,077 of their young female patients, of whom 90.4% were white and 9.6% were AfricanAmerican.[1] The authors of the study say their sample of girls was not selected randomly and therefore may not accurately represent the entire U.S. population of female children. However, they know of no systematic bias in their sample and they believe the girls they studied are typical.