Abstract
objective: To assess prevalence of overweight and obesity in government and private school adolescents by using BMI and measurements of skinfold thickness as parameter of obesity and to evaluate diagnostic value of skinfold thickness measurement as compared to BMI in identifying overweight and obese adolescents.methods: This was questionnaire based, voluantary response prospective study. Data were collected from 600 adolescents aged between 10-19 years divided equally between government and private school of both genders. Height, weight and skinfold thickness (Triceps skinfold and Subscapular skinfold) were measured.BMI calculated. Prevalence of overweight and obesity were determined and TSFT and SSFT compared with BMI as obesity parameters.results: Prevalence of overweight and obesity were significantly less in government school adolescents as compared to private school (7% vs 21.67% and 3.33% vs 8.33% respectively)(p<0.001 significant). TSFT in comparison to BMI carried sensitivity 49.59%, specificity 100%, positive predictive value100%, negative predictive value 88.70% and efficacy 89.83%. SSFT in comparison to BMI carried sensitivity 41.32%, specificity 100%, positive predictive value 100%, negative predictive value 87.09% and efficacy88.17%. Correlation of BMI with TSFT(r=0.508) and SSFT(r=0.604) was significant (p<0.001).Correlation of TSFT and SSFT with age was not significant. Correlation of TSFT and SSFT with genders (in both boys and girls) was found significant (p<0.001).conclusion: BMI measures body weight. It cannot give accurate assessment of body composition or body fat. Skinfold thickness measurements are better predictors for body fat in both boys and girls which do not correlates with age.
Highlights
WHO identifies adolescence as the period in human growth and development that occurs after childhood and before adulthood, from ages 10 to19
According to subscapular skinfold thickness,overweight and obese were less in government school as proportion of the underweight category of adolescents were compared to private school (3. 0% vs 6.67% and 2.33% vs more in government school as compared to private school 4.67% respectively).(P=0.001 Significant)(Table No VIII)
The present study shows the correlation of BMI with TSFT and SSFT and comparing the diagnostic values of TSFT and SSFT for diagnosing adolescents obesity in relation with BMI
Summary
WHO identifies adolescence as the period in human growth and development that occurs after childhood and before adulthood, from ages 10 to. India is home to more adolescents around -243 million than any other country.[2]. In Hong Kong overweight and obesity was 11.7% and 3.1% in boys respectively It was 9.8% and 1.8% respectively in girls. Growth patterns are different among different populations, it is necessary to have country-specific growth charts to monitor growth of children between 5-18 years so IAP recommends to define overweight and obesity in children from 5-18 years of age, adult equivalent of 23 and 27 cut-offs lines as presented in BMI charts are used.[7] Anthropometric measurements when used along with BMI gives a better picture of adolescent obesity. The present study is undertaken to determine the prevalence of overweight and obesity in adolescents of the private and government schools of Jaipur city and its anthropometric characteristics
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