Comparison of TW1 and TW2 skeletal age differences in American black and white and in Mexican children 6-13 years of age

Ann Hum Biol. 1981 Nov-Dec;8(6):543-8. doi: 10.1080/03014468100005381.


Differences in Tanner-Whitehouse (TW) skeletal ages as derived from the original (TW1) and revised (TW2) systems were compared in three ethnically different samples of children 6-13 years of age: mixed longitudinal samples of American White and Black children for Philadelphia, and a cross-sectional samples of Mexican children from Oaxaca in southern Mexico. TW2 skeletal ages are, on average, consistently lower than TW1 skeletal ages. Within a given chronological age and sex group, the differences are similar in terms of means and variation about the means in better-off children, both black and White in Philadelphia and in disadvantaged Mexican children.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adolescent
  • Age Determination by Skeleton*
  • Black or African American
  • Child
  • Female
  • Humans
  • Male
  • Methods
  • Mexico
  • Sex Factors
  • United States
  • White People