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The identification and evaluation of measurement variability in the anthropometry of preschool children
Author(s) -
Martorell Reynaldo,
Habicht JeanPierre,
Yarbrough Charles,
Guzmán Guillermo,
Klein Robert E.
Publication year - 1975
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.1330430308
Subject(s) - variance (accounting) , anthropometry , statistics , statistic , context (archaeology) , reproducibility , observational error , explained variation , analysis of variance , mathematics , medicine , geography , accounting , archaeology , business
Measurement variability estimates for 18 different anthropometric dimensions were collected within the context of an ongoing longitudinal investigation of preschool Guatemalan children. Estimates of total measurement variance, intra‐observer variance, and short‐term intra‐subject variance are presented for each variable. A simple procedure for the evaluation of measurement variance in cross‐sectional and longitudinal investigations is described in which the total measurement variance is expressed as a percentage of the appropriate inter‐subject variance. This statistic serves as an index of the relative reproducibility of anthropometric variables.