Receiver operating characteristic curve analysis of BMI and percentage body fat in type 2 diabetics of Punjab.
Indian J Physiol Pharmacol
;
2004 Jan; 48(1): 73-80
Article
in English
| IMSEAR
| ID: sea-106829
ABSTRACT
The present study attempted to establish appropriate cut off levels of Body Mass Index (BMI) for defining overweight as a risk for the development of type 2 diabetes considering percentage body fat (BF) as standard. A total of 300 patients of known type 2 diabetes participated in the study (150 males and 150 females, all > or = 40 years of age). Clinical examination was done. Anthropometric measurements as BMI, Waist Circumference (WC) and Waist-hip ratio (WHR) were calculated. Percentage BF was calculated using skinfold thickness method from the equation of Durnin and Womersley. Mean BMI for males was 24.97 (SD 4.3) kg/m2 and for females was 27.56 (SD 5.14) kg/m2. Mean percentage BF for males was 28.19 (SD 0.74) and for females was 38.22 (SD 5.29). A comparison of BF and BMI data with various ethnic groups revealed conspicuous differences. Receiver operating characteristic (ROC) curve analysis showed a low sensitivity of conventional cut off value of BMI (25 kg/m2) in identifying subjects with overweight as compared to the cut off values based on percentage BF (males > 25, females > 30). This results in substantial misclassification. Based on the ROC curve, a lower cut off value of BMI 22.3 kg/m2, displayed the optimal sensitivity and specificity, and less misclassification in identification of type 2 diabetics with high percentage BF. BF BMI was calculated and was found to be higher in females.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Body Composition
/
Body Weight
/
Female
/
Humans
/
Male
/
Body Mass Index
/
Anthropometry
/
Adipose Tissue
/
ROC Curve
/
Adult
Type of study:
Prognostic study
Country/Region as subject:
Asia
Language:
English
Journal:
Indian J Physiol Pharmacol
Year:
2004
Type:
Article
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