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Adolescent obesity by different growth charts and its efficacy with central adiposity among school-age children in Mumbai

Anita Patil, Priti Patil, Prashant Bhandarkar

Abstract

Adolescent obesity can be defined using various age- and sex-specific growth
charts. In addition to general obesity, central adiposity is also crucially important. This paper
aims to study the efficacy of central adiposity with general obesity using different growth
charts recommendations. A cross-sectional study was conducted among school-age children in
Mumbai. Anthropometric data were obtained from 1349 adolescents aged 9–15 years. Growth
charts of Indian Academy of Pediatrics (IAP), International Obesity Task Force (IOTF), and
World Health Organization (WHO) were used to classify overweight and obese status among
each of the participants. Central obesity indices such as the waist circumference (WC), the
waist to height ratio (WHtR), and the waist to hip ratio (WHR) were calculated. The efficacy of
each of central obesity indices was checked with overweight and obesity status. The receivers
operating characteristics curves were drawn to check the efficacy of central obesity indices.
According to IAP, IOTF, and WHO chart, the prevalence rates of overweight and obese among
the sampled adolescents were 35.9%, 27.0%, and 25.0%, respectively, while, 26.5%, 26.3%,
and 31% were found to be centrally obese as per WC, WHtR, and WHR, respectively. The
values of area under curve for WC and WHtR were found between 0.857 and 0.942 for all three
methods, while the corresponding values were between 0.611 and 0.689, indicating that WHR
is a less robust indicator. We conclude that the central obesity status appears to be an efficient
measure to identify the general obesity status irrespective of growth chart recommendations.
WHtR and WC are found to be more robust indicators of general obesity.


Keywords

adolescent obesity; central adiposity; growth chart; India; Mumbai; obesity; overweight; school-age children

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DOI: http://dx.doi.org/10.18063/ijps.v4i2.844
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