Abstract
An analysis has been made of repeated skeletal age assessments of 50 hand-wrist roentgenograms by 5 observers. These assessments by pediatric radiologists and research workers were made using the tables of Garn and his co-workers5 for younger patients and the Greulich and Pyle atlas for older patients.The replicability of assessments by the pediatric radiologists and the research workers, when using the Greulich and Pyle atlas, was similar to that reported by other experienced assessors and was better at younger than at older ages. The differences between observers were larger for pairs including pediatric radiologists than for the pair of research workers. These differences tended to be smaller when the method of Garn et al.5 was used.The differences between repeated assessments by the research workers were smaller when the Greulich and Pyle atlas was used to make bone-specific assessments than when it was used to make over-all assessments. Data from patients in whom the differences between observers wer...
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