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Tanner‐Whitehouse and Greulich‐Pyle skeletal age velocity comparisons
Author(s) -
Fry Edward I.
Publication year - 1971
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330350313
Subject(s) - bone age , growth velocity , demography , medicine , endocrinology , sociology
Longitudinal velocity measurements of Tanner‐Whitehouse (TW) and Greulich‐Pyle (GP) skeletal ages have been determined for 233 Hong Kong Chinese orphanage children. When skeletal age is compared to chronological age (CA) the resulting ratio TW/CA or GP/CA has been titled a Tanner. Tanner values range from 0.74 to 1.26 for the GP/CA calculations and from 0.73 to 1.45 for the TW/CA calculations. The mean Tanner value was much higher for TW velocities ( X = 1.19). Age to age variability in velocity is large by either system and generally girls vary more than boys.