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Standardized Percentile Curves of Body Mass Index of Northeast Iranian Children Aged 25 to 60 Months

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Author(s): Maryam Emdadi | Mohammad Safarian | Hassan Doosti

Journal: Iranian Journal of Pediatrics
ISSN 2008-2142

Volume: 21;
Issue: 1;
Start page: 88;
Date: 2011;
Original page

Keywords: Body Mass Index | Growth Charts | Anthropometry | Children | Reference Growth Curves

ABSTRACT
Objective: Growth charts are widely used to assess children's growth status and can provide a trajectory of growth during early important months of life. Racial differences necessitate using local growth charts. This study aimed to provide standardized growth curves of body mass index (BMI) for children living in northeast Iran. Methods: A total of 23730 apparently healthy boys and girls aged 25 to 60 months recruited for 20 days from those attending community clinics for routine health checks. Anthropometric measurements were done by trained health staff using WHO methodology. The LMSP method with maximum penalized likelihood, the Generalized Additive Models, the Box-Cox power exponential distribution distribution, Akaike Information Criteria and Generalized Akaike Criteria with penalty equal to 3 [GAIC(3)], and Worm plot and Q-tests as goodness of fit tests were used to construct the centile reference charts. Findings: The BMI centile curves for boys and girls aged 25 to 60 months were drawn utilizing a population of children living in northeast Iran. Conclusion: The results of the current study demonstrate the possibility of preparation of local growth charts and their importance in evaluating children's growth. Also their differences, relative to those prepared by global references, reflect the necessity of preparing local charts in future studies using longitudinal data.
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