Abstract
Three observers rated 57 X-rays from normal healthy children in Project HeartBeat! twice each by CASAS, the computer-assisted version of the TW2 RUS bone age method. Differences between duplicates of individual bone ratings which reached or exceeded 1.0 unit (or 1 stage) were 5% within observer and 8% between observers for CASAS, and 17 and 33%, respectively, for the unassisted MANUAL method. In children followed longitudinally, CASAS scores increased much more steadily than MANUAL scores, largely because the bones were rated, in the former system, on a continuous rather than a discrete-integer scale. We conclude that CASAS is a more reliable and probably a more valid estimator of skeletel maturity than the MANUAL version of the TW2 RUS method.
Original language | English (US) |
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Pages (from-to) | 288-294 |
Number of pages | 7 |
Journal | Hormone Research in Paediatrics |
Volume | 42 |
Issue number | 6 |
DOIs | |
State | Published - 1994 |
Keywords
- Bone age
- Computer-assisted TW
- Reliability
- Skeletal maturity
- Tanner-Whitehouse method
- Validity
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Endocrinology, Diabetes and Metabolism
- Endocrinology