Korean J Obes 2011; 20(2): 65-74
Published online June 1, 2011
Copyright © Korean Society for the Study of Obesity.
Yun A Shin*, Yun Jung Shin(1), Jin Kyoung Park(2), Joanne Park(3)
Department of Prescription & Rehabilitation of Exercise, College of Sports Science, Dankook University, Department of Sports Health Management, Sangmyung University(1), Department of Maternal and Child Health Center, Soonchunhyang University(2), Coca-Cola Korea Youth Foundation(3)
Background: There is still much debate on which standard cutoff value should be used for diagnosing adolescent obesity although various cutoff values have been used for assessing overweight and obesity in adolescents. This study compares the prevalence of overweight and obesity in adolescents according to the different cutoff values.
Methods: Subjects included 6,571 students from middle and high schools in Korea during 2008 until 2010. Degree of obesity, body mass index and percent body fat were measured. The sensitivity and specificity of the cutoff values of International Obesity Task Force, IOTF, the Working Group for Obesity in China, WGOC, body mass index, and 85th and 95th percentile of body fat were compared
according to the degree of obesity, gender, and age.
Results: The prevalence of overweight and obesity differed by gender and age. The IOTF cutoff value was the most sensitive in screening for the prevalence of overweight in boys. WGOC cutoff value was the most sensitive in screening for the prevalence of obesity in both boys and girls. It was also the most sensitive cutoff value for screening overweight girls.
Conclusion: The prevalence of obesity varied depending on the different cutoff values. The WGOC cutoff value showed to be the most sensitive and specific in screening for obesity.
Keywords: Obesity cutoff, Obesity degree, IOTF cutoff, WGOC cutoff, Adolescent