Standardizing anthropometric measures in children and adolescents with functions for egen: Update
Suzanna I. Vidmar
Clinical Epidemiology and Biostatistics Unit
Murdoch Childrens Research Institute and
University of Melbourne Department of Paediatrics
Royal Children's Hospital
Melbourne, Australia
[email protected]
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Tim J. Cole
MRC Centre of Epidemiology for Child Health
UCL Institute of Child Health
London, UK
[email protected]
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Huiqi Pan
MRC Centre of Epidemiology for Child Health
UCL Institute of Child Health
London, UK
[email protected]
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Abstract. In this article, we describe an extension to the egen functions
zanthro() and zbmicat() (Vidmar et al., 2004, Stata
Journal 4: 50–55). All functionality of the original version remains
unchanged. In the 2004 version of zanthro(), z scores could be
generated using the 2000 U.S. Centers for Disease Control and Prevention
Growth Reference and the British 1990 Growth Reference. More recent growth
references are now available. For measurement-for-age charts, age can now be
adjusted for gestational age. The zbmicat() function previously
categorized children according to body mass index (weight/height^2) as normal
weight, overweight, or obese. “Normal weight” is now split into
normal weight and three grades of thinness. Finally, this updated version uses
cubic rather than linear interpolation to calculate the values of L, M, and S
for the child‘s decimal age between successive ages (or length/height
for weight-for-length/height charts).
View all articles by these authors:
Suzanna I. Vidmar, Tim J. Cole, Huiqi Pan
View all articles with these keywords:
zanthro(), zbmicat(), z scores, LMS, egen, anthropometric standards
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