Cole, TJ;
Flegal, KM;
Nicholls, D;
Jackson, AA;
(2007)
Body mass index cut offs to define thinness in children and adolescents: international survey.
BRIT MED J
, 335
(7612)
194 - 197.
10.1136/bmj.39238.399444.55.
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Abstract
Objective To determine cut offs to define thinness in children and adolescents, based on body mass index at age 18 years. Design International survey of six large nationally representative cross sectional studies on growth. Setting Brazil, Great Britain, Hong Kong, the Netherlands, Singapore, and the United States. Subjects 97 876 mates and 94 851 females from birth to 25 years. Main outcome measure Body mass index (BMI, weight/ height2). Results The World Health Organization defines grade 2 thinness in adults as BMI <17. This same cut off, applied to the six datasets at age 18 years, gave mean BMI close to a z score of -2 and 80% of the median. Thus it matches existing criteria forwasting in children based on weight for height. For each dataset, centile curves were drawn to pass through the cut off of BMI 17 at 18 years. The resulting curves were averaged to provide age and sex specific cut-off points from 2-18 years. Similar cut offs were derived based on BMI 16 and 18.5 at 18 years, together providing definitions of thinness grades 1, 2, and 3 in children and adolescents consistent with the WHO adult definitions. Conclusions The proposed cut-off points should help to provide internationally comparable prevalence rates of thinness in children and adolescents.
| Type: | Article |
|---|---|
| Title: | Body mass index cut offs to define thinness in children and adolescents: international survey |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1136/bmj.39238.399444.55 |
| Publisher version: | http://www.ncbi.nlm.nih.gov/pmc/ articles/PMC19344... |
| Keywords: | FOR-DISEASE-CONTROL, T-CELL COUNTS, NUTRITIONAL-STATUS, QUALITY ASSESSMENT, HIV-INFECTION, ANTIRETROVIRAL TREATMENT, PENALIZED LIKELIHOOD, ANOREXIA-NERVOSA, GROWTH STANDARDS, REFERENCE CURVES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health > Population, Policy and Practice Dept |
| URI: | https://discovery.ucl.ac.uk/id/eprint/3698 |
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