PEDIATRICS Vol. 47 No. 5 May 1971, pp. 915-916
This Article
Right arrow Full Text (PDF)
Right arrow P3Rs: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when P3Rs are posted
Right arrow Alert me if a correction is posted
Services
Right arrow E-mail this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My File Cabinet
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wingerd, J.
Right arrow Articles by Solomon, I. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wingerd, J.
Right arrow Articles by Solomon, I. L.

Improved Separation of Centile Lines on Growth Charts

John Wingerd M.A.1, Edgar J. Schoen M.D.2, and Irene L. Solomon M.D.2

1 Child Health and Development Studies
2 Department of Pediatrics, The Permanente Medical Group, Kaiser Foundation Hospital, Oakland, California

On infant growth curves drawn by the usual technique (Fig. 1, left), it is often difficult to distinguish among the centile lines. The lines for the first few months of life are so steep, and so close together, that a chart must be made inconveniently large to be readable. Plotting the logarithm of the height or weight against age improves distinction only slightly.

A more satisfactory graphic representation of growth data is suggested by the method of Rao.1 A modification of Rao's method, applicable to the longitudinal analysis of growth data, was recently described by one of us (J.W.).2