Korean J Obes 2014; 23(1): 64-68
Published online March 30, 2014
Copyright © Korean Society for the Study of Obesity.
Yeo Rin Park, Young Gyu Cho*, Jae Heon Kang, Hyun Ah Park, Kyoung Woo Kim, Yang Im Hur(1), Ji Sun Seo, No Yai Park(2)
Department of Family Medicine, Seoul Paik Hospital, College of Medicine, Inje University;
Department of Public Health and Healthcare Management, Inje Institute of Advanced Studies(1); and
Graduate School of Public Health, Inje University(2)
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: The prevalence of obesity was estimated based on self-reported height and weight recorded in the Community Health Survey (CHS), a nationwide survey which began in 2008. This study was conducted to evaluate the extent and consistency of underestimation in obesity and overweight prevalences in CHS compared to the Korea National Health and Nutrition Examination Survey (KNHANES) data.
Methods: In this study, we compared the prevalence estimates of obesity and overweight among Korean adults aged 20 and over using 2010 KNHANES and 2010 CHS data. In contrast to KNHANES data, where subjects' height and weight were actually measured, CHS data relied on subjects' self-reported height and weight.
Results: Compared to KNHANES, CHS underestimated the obesity and overweight prevalence by 8.6%P and 7.8%P, respectively. Height (men: -0.9 cm, women: -1.7 cm) was overestimated while weight (men: 0.5 kg, women: 1.1 kg) and body mass index (men: 0.4 kg/m2, women: 1.0 kg/m2) were underestimated in CHS compared to KNHANES data. The overestimation of height was greater as age increased and weight was underestimated by more than 1.0 kg among men aged 20~39 and women aged 20~49 according to CHS data.
Conclusion: CHS underestimated both obesity and overweight prevalences among Korean adults and the degree of underestimation differed across gender and age.
Keywords: Community Health Survey, Korea National Health and Nutrition Examination Survey, Obesity, Overweight, Prevalence