KMID : 0384320030240080739
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Korean Journal of Family Medicine 2003 Volume.24 No. 8 p.739 ~ p.745
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The Factors Associated with Becoming Obese Children: in 6th Grade Childten of Elementary Schools in Busan
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Park Kyung-Won
Lee Ka-Young Park Tae-Jin Kwon Eun-Ryoung Ha Sung-Ja Moon Hye-Jung Kim Jin-Kyung
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Abstract
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Background : The purpose of this study was to find the factors associated with becoming obese children during the past 2 years in 6th grade children of elementary school and then to evaluate the high risk groups for childhood obesity.
Methods : The 738 children from May to June, 2001 in 6th grade of 5 elementary schools in Busan were the subjects of this study. The children¡¯s height and weight in 4th grade and 6th grade were obtained from school health records. We calculated the body mass index in 4th and 6th grades and classified into 3 weight groups (normal, at risk for obesity, and obese) according to the age and sex-specific BMI established by the Korean Academy of Pediatrics. If children¡¯s weight group in 4th grade was changed to heavier weight group in 6th grade, we defined it as increased group. Otherwise, we defined it as non-increased group. The association between the increase in weight group and parental and children¡¯s characteristics were analyzed by ¥ö2-test, ¥ö2-test for the trend, t-test, ANOVA and multiple logistic regression.
Results : Among the total, 3.3% of children with normal weight and 16.9% of children at the risk for obesity in 4th grade were transformed to increased group in 6th grade, respectively (P£¼0.001). Children who had excessive appetite (P£¼0.001), watched TV greater than or equal to 2 hours per day (P=0.004) or had an obese father (P=0.044) were more likely to become increased group. After adjusting for father¡¯s obesity, appetite and TV watching time in children, the odds ratio of transforming to increased group after 2 years in children at risk for obesity or in obese child in 4th grade was 2.5 (95% CI: 1.09¡5.55) compared to children with normal weight. Children having excessive appetite were 3.2 times (95% CI: 1.42¡7.01) more likely to become the increased group after adjusting for father¡¯s obesity, TV watching time and weight in 4th grade. Children watching TV greater than or equal to 2 hours/day was 2.8 times (95% CI: 1.27¡6.18) more likely to become increased group after adjusting for father¡¯s obesity, appetite and weight in 4th grade.
Conclusion : The risk of becoming obese was higher in children at risk for obesity or obese children in those with excessive appetite or those who have watched TV ¡Ã2 hours/day for the past two years. These findings suggest promotion of educational plan to prevent childhood obesity.
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KEYWORD
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childhood obesity, longitudinal change, weight change, risk factor
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