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Eur J Clin Nutr. 2002 Oct;56(10):973-82.

A comparison of international references for the assessment of child and adolescent overweight and obesity in different populations.

Author information

  • 1Department of Human Nutrition, University of Illinois, Chicago 60612, USA. youfwang@uic.edu

Abstract

OBJECTIVE:

To compare different references assessing child and adolescent overweight and obesity in different populations.

DESIGN:

Comparison cross-sectional study.

SETTING:

The United States, Russia, China.

SUBJECTS:

A total of 6108 American, 6883 Russian and 3014 Chinese children aged 6-18 y.

INVESTIGATION:

Using nationwide survey data from the USA (NHANES III, 1988-1994), Russia (1992), and China (1991), we compared three references: (1) the International Obesity Task Force (IOTF) reference, sex-age-specific body mass index (BMI) cut-offs that correspond to BMIs of 25 for overweight and 30 for obesity at age 18; (2) the World Health Organization (WHO) reference--BMI 85th percentiles for overweight in adolescents (10-19 y) and weight-for-height Z-scores for obesity in children under 10; (3) a USA reference--BMI 85th and 95th percentiles to classify overweight and obesity, respectively.

RESULTS:

Using the IOTF reference and 85th BMI percentiles, overweight prevalence was 6.4 and 6.5% in China, 15.7 and 15.0% in Russia, and 25.5 and 24.4% in the USA, respectively. Notable differences existed for several ages. Kappa (=0.84-0.98) indicated an excellent agreement between the two references in general, although they varied by sex-age groupings and countries. Overweight prevalence was twice as high in children (6-9 y) than in adolescents (10-18 y) in China and Russia, but was similar in the USA. Estimates of obesity prevalence using these three references varied substantially.

CONCLUSIONS:

The references examined produce similar estimates of overall overweight prevalence but different estimates for obesity. One should be cautious when comparing results based on different references.

SPONSORSHIP:

University of Illinois and University of North Carolina.

PMID:
12373618
[PubMed - indexed for MEDLINE]
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