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. 1991 Nov-Dec;14(9):503-8.

The inter- and intraexaminer reliability of the Gonstead pelvic marking system

G Plaugher  1 , A H Hendricks
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  • PMID: 1761961

The inter- and intraexaminer reliability of the Gonstead pelvic marking system

G Plaugher et al. J Manipulative Physiol Ther. 1991 Nov-Dec.

Abstract

An investigation was undertaken to determine the inter- and intraexaminer reliability of the Gonstead pelvic radiographic marking system. This methodology analyzes the relative dimensions and spatial positions of the two innominate bones and sacrum and measures leg length inequality through an evaluation of femur head height. Two examiners marked 71 full spine radiographs twice to provide data from 284 analyses. Reliability was ascertained with the Pearson r, Spearman, intraclass correlation coefficient (ANOVA) and Kappa statistics. All results were statistically significant (less than 0.001) and indicated high levels of concordance. In every case, intraexaminer agreement was superior to interexaminer concordance.

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