Journal of Obesity & Metabolic Syndrome



Korean J Obes 2014; 23(1): 64-68

Published online March 30, 2014

Copyright © Korean Society for the Study of Obesity.

Comparison of Obesity and Overweight Prevalence Among Korean Adults According to Community Health Survey and Korea National Health and Nutrition Examination Survey

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)

Received: October 22, 2013; Reviewed : November 18, 2013; Accepted: November 20, 2013

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( 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

Fig. 1. Mean values of weight, height and body mass index by gender and age, from 2010 KNHANES and 2010 CHS.

Prevalence estimates of obesity and overweight by gender and age, from 2010 KNHANES and 2010 CHS

  1. World Health Organization. Obesity and overweight. [accessed 2013 Oct 16]; Available from: URL:
  2. Kang JH, Jeong BG, Cho YG, Song HR, Kim KA. Socioeconomic costs of overweight and obesity in Korean adults. J Korean Med Sci 2011;26:1533-40.
    Pubmed KoreaMed CrossRef
  3. Korea Center for Disease Control and Prevention. Korea Health Statistics 2011: Korea National Health and Nutrition Examination Survey (KNHANES V-2). Seoul:Korean Ministry of health and Welfare; 2012.
  4. Song YM, Yoon JL. The accuracy of self-reported weight and height. Korean J Epidemiol 1995;17:257-68.
  5. Yun S, Zhu BP, Black W, Brownson RC. A comparison of national estimates of obesity prevalence from the behavioral risk factor surveillance system and the National Health and Nutrition Examination Survey. Int J Obes (Lond) 2006;30:164-70.
    Pubmed CrossRef
  6. Paccaud F, Wietlisbach V, Rickenbach M. Body mass index: comparing mean values and prevalence rates from telephone and examination surveys. Rev Epidemiol Sante Publique 2001;49:33-40.
  7. Sahyoun NR, Maynard LM, Zhang XL, Serdula MK. Factors associated with errors in self-reported height and weight in older adults. J Nutr Health Aging 2008;12:108-15.
    Pubmed CrossRef
  8. Kim CS, Jeong TH, Kim MC, Park JW. Factors associated with distorted self-perception of body weight in Korean adults. J Korean Acad Fam Med 2004;25:462-8.
  9. Ezzati M, Martin H, Skjold S, Vander Hoorn S, Murray CJ. Trends in national and state-level obesity in the USA after correction for self-report bias: analysis of health surveys. J R Soc Med 2006;99:250-7.
    Pubmed KoreaMed CrossRef