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Validity of photographic imaging for assessing standing height of preschoolers
Author(s) -
Beintema Joni Jade Serena,
Solomons Noel W.,
Orozco Mónica N.,
GarcíaMeza Rosario,
Gwaltney Rebecca,
Rolker Heike B.,
Doak Colleen M.
Publication year - 2016
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.30.1_supplement.890.2
Subject(s) - mathematics , sagittal plane , pearson product moment correlation coefficient , limits of agreement , nuclear medicine , statistics , medicine , anatomy
Background In an exercise aimed at assessing trunk‐to‐leg ratio from photographic imaging, a derivative study examined its accuracy to estimate standing height. Objective To compare photographic imaging procedures to measured standing height in preschool children. Methods The photographic images of 200 preschool children, 100 each from Sololá and Quetzaltenango were evaluated for estimation of standing height. Original standing height was measured with a wall‐stadiometer. A photograph was taken from a 3‐m distance with the child standing sideways and looking forward in the Frankfort Plane Gaze while standing in front of a color‐coded metric ruler. An ocular estimation of height, at the intersection with the ruler was made from print outs, enlarge don a computer screen and from the zoomed camera screen. Results The mean measured standing height was 108.8 cm (median: 109 cm) compared to 109.0 cm (median: 109cm)(p<0.05) determined by a photo‐image. The Pearson correlation coefficient was r=0.988 and the Lin concordance correlation was r=0.987. According to the Bland‐Altman agreement analysis, height derived from a photo‐image overestimates measured height by 0.20 cm. For 34.5% of the photo‐image data, the estimates were identical, and for an additional 50.0% they were ±1 cm of theme asured value. Conclusion This study shows a high correlation to measured height from photographic imaging, using the same sagittal photograph applied to body‐segment analysis. Equivalent validity was obtained with direct reading from the camera or computer screen as with measurement from a photographic print.