PMID- 15132861 OWN - NLM STAT- MEDLINE DCOM- 20040729 LR - 20061115 IS - 0254-6450 (Print) IS - 0254-6450 (Linking) VI - 25 IP - 2 DP - 2004 Feb TI - [The relation between body mass index and percentage body fat among Chinese adolescent living in urban Beijing]. PG - 113-6 AB - OBJECTIVE: To study the relation between body mass index (BMI) and percentage body fat (PBF) in Chinese adolescent, and to compare the prevalence of overweight and obesity using BMI or PBF standards. METHODS: BMI from 757 girls with an average aged of 10.1 years in the rural areas, 165 girls average aged 13.5 years in suburbs and 172 boys average aged 13.7 years in suburb of Beijing, were measured. Their body compositions were also measured by dual-energy X-ray absorptiometry (DEXA). RESULTS: BMI was found closely correlated with PBF in each age group of rural and suburb girls and suburb boys with the correlation coefficient(r) of 0.59 - 0.83. When age, height and pubertal development were controlled, r became 0.54 - 0.88. The prevalence rates of obesity in rural girls, suburb girls and suburb boys were 33.1%, 21.8% and 21.5%, when PBF cutoff values (girls: PBF >or= 35%, boys: PBF >or= 25%) were used. However, the rates became 2.4%, 3.0% and 4.0% when BMI cutoff values of International Obesity Task Force (IOTF) were used. Compared with PBF cutoff values for obesity, the IOTF recommended BMI cutoff values had relatively lower sensitivity (7.3% - 18.9%) and higher specificity (100%). CONCLUSION: BMI correlated well with PBF in Beijing adolescent. IOTF-BMI cutoff values showed low sensitivity and high specificity to Chinese adolescent which might be suitable for identifying obesity but not for the purpose of screening. FAU - Zhang, Qian AU - Zhang Q AD - The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China. FAU - Du, Wei-jing AU - Du WJ FAU - Hu, Xiao-qi AU - Hu XQ FAU - Liu, Ai-ling AU - Liu AL FAU - Pan, Hui AU - Pan H FAU - Ma, Guan-sheng AU - Ma GS LA - chi PT - Comparative Study PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Liu Xing Bing Xue Za Zhi JT - Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi JID - 8208604 SB - IM MH - Adolescent MH - Adolescent Development/physiology MH - Age Factors MH - Body Composition/*physiology MH - *Body Mass Index MH - Child MH - China/epidemiology MH - Female MH - Humans MH - Logistic Models MH - Male MH - Multivariate Analysis MH - Obesity/diagnosis/epidemiology MH - Rural Population/statistics & numerical data MH - Sex Factors MH - Suburban Population/statistics & numerical data MH - Urban Population/*statistics & numerical data EDAT- 2004/05/11 05:00 MHDA- 2004/07/30 05:00 CRDT- 2004/05/11 05:00 PHST- 2004/05/11 05:00 [pubmed] PHST- 2004/07/30 05:00 [medline] PHST- 2004/05/11 05:00 [entrez] PST - ppublish SO - Zhonghua Liu Xing Bing Xue Za Zhi. 2004 Feb;25(2):113-6.