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Caspian Journal of Internal Medicine، جلد ۶، شماره ۳، صفحات ۱۲۸-۱۳۳
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عنوان انگلیسی Sex difference of biological variation of BMI and waist circumference with age in Iranian adults: A predictive regression model
چکیده انگلیسی مقاله  Background: Background and Objectives: The biological variation of body mass index (BMI) and waist circumference (WC) with age may vary by gender. The objective of this study was to investigate the functional relationship of anthropometric measures with age and sex.Methods: The data were collected from a population-based cross-sectional study of 1800 men and 1800 women aged 20-70 years in northern Iran. The linear and quadratic pattern of age on weight, height, BMI and WC and WHR were tested statistically and the interaction effect of age and gender was also formally tested. Results: The quadratic model (age2) provided a significantly better fit than simple linear model for weight, BMI and WC. BMI, WC and weight explained a greater variance using quadratic form for women compared with men (for BMI, R2=0.18, p< 0.001 vs R2=0.059, p< 0.001 and for WC, R2=0.17, p< 0.001 vs R2=0.047, p< 0.001). For height, there is an inverse linear relationship while for WHR, a positive linear association was apparent by aging, the quadratic form did not add to better fit. Conclusion: These findings indicate the different patterns of weight gain, fat accumulation for visceral adiposity and loss of muscle mass between men and women in the early and middle adulthood. 
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نویسندگان مقاله کریم الله حاجیان تیلکی | karimollah hajian tilaki
department of biostatistics and


بهزاد حیدری | behzad heidari
department of
نشانی اینترنتی http://www.caspjim.com/browse.php?a_code=A-10-133-1&slc_lang=en&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Health
نوع مقاله منتشر شده Original Article
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