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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Public Health 1/2015

Development of waist circumference percentiles for Japanese children and an examination of their screening utility for childhood metabolic syndrome: a population-based cross-sectional study

Zeitschrift:
BMC Public Health > Ausgabe 1/2015
Autoren:
Rie Matsushita, Tsuyoshi Isojima, Ryuzo Takaya, Eiichiro Satake, Rie Yamaguchi, Kazuteru Kitsuda, Eiko Nagata, Shinichiro Sano, Toshiki Nakanishi, Yuichi Nakagawa, Takehiko Ohzeki, Tsutomu Ogata, Yasuko Fujisawa
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​s12889-015-2447-1) contains supplementary material, which is available to authorized users.

Competing interests

We have no competing interests to declare.

Authors’ contributions

R.M. conceived the original idea for the study, collected the data, and analyzed them; T.I. made the percentile curves; R.T. collected the data from the participants who were obese; E.S., R.Y., K.K., E.N., S.S., and T.N. obtained data to evaluate the percentiles; Y.N., T. Ohzeki, and T. Ogata supervised this project; R.M. and Y.F. wrote the paper; and Y. F. will act as guarantor for the paper. All authors read and approved the final manuscript.

Abstract

Background

In Japan, waist circumference (WC) percentiles to screen for childhood metabolic syndrome (MetS) are unavailable. The objectives of this study were to develop WC and WC-to-height ratio (WC/Ht) percentile curves by age and sex for Japanese children, and to test their utility in screening for MetS in children with obesity who are otherwise healthy.

Methods

The WC and WC/Ht percentiles were developed using the LMS method of summarizing growth standards, which monitors changing skewness (L), medians (M), and coefficients of variation (S) in childhood distributions. A representative dataset was used, which consisted of 3,634 boys and 3,536 girls aged 4.5–12.75 years in Shizuoka prefecture, Japan, between 2010 and 2012. Children who were obese (355 boys and 230 girls) aged 6–12 years from Osaka prefecture, Japan, were screened for childhood MetS using the new percentiles and the International Diabetes Federation’s (IDF’s) definition of MetS.

Results

The number of participants with certain metabolic abnormalities (high systolic and diastolic blood pressure, and a high level of triglycerides) was significantly higher in boys aged 10–12 years, with a WC ≥ 90th percentile, than among those with a WC < 90th percentile. None of the participants with a WC < 90th percentile exhibited two or more metabolic abnormalities, regardless of their age or sex. Among the participants aged 10–12 years, 11.4 % of boys and 4.4 % of girls with a WC ≥ 90th percentile were diagnosed with MetS.

Conclusions

The new percentiles may have a certain level of potential to screen Japanese children for childhood MetS in accordance with the IDF definition.
Zusatzmaterial
Additional file 1: Table S1. Box–Cox values for power (L), adjusted mean (M), and coefficient of variation (S) of WC for the Japanese children of boys and girls from 4.50 to 12.75 years of age. Table S2. Box–Cox values for power (L), adjusted mean (M), and coefficient of variation (S) of WC/Ht for the Japanese children of boys and girls from 4.50 to 12.75 years of age. (DOCX 179 kb)
12889_2015_2447_MOESM1_ESM.docx
Literatur
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