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Journal of Dental Research
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Adjusting Craniofacial Correlations for Technical Error

P.H. Buschang

Centre de Recherche sur la Croissance Humaine, Université de Montreal, 2801, boul. Edouard-Montpetit, Montreal, Québec H3T IJ6, Canada

R. Tanguay

Centre de Recherche sur la Croissance Humaine, Université de Montreal, 2801, boul. Edouard-Montpetit, Montreal, Québec H3T IJ6, Canada

L. La Palme

Centre de Recherche sur la Croissance Humaine, Université de Montreal, 2801, boul. Edouard-Montpetit, Montreal, Québec H3T IJ6, Canada

A. Demirjian

Centre de Recherche sur la Croissance Humaine, Université de Montreal, 2801, boul. Edouard-Montpetit, Montreal, Québec H3T IJ6, Canada

Reliability estimates provide a means of adjusting observed correlations for technical error. The results show that the true correlations among 11 craniofacial landmarks are consistently higher than observed values. Consequently, the regression slopes defining these relationships are also increased. The less reliable two measures are, and the closer their joint reliability approximates the observed correlation, the greater the expected change in true correlation. Adjusting craniofacial relationships for technical error may substantially increase the proportion of variation explained, and thereby alter statistical inferences drawn from results.

Journal of Dental Research, Vol. 64, No. 6, 919-921 (1985)
DOI: 10.1177/00220345850640061201
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