Analysis of the correlation between digit ratio and obesity in adult Daur ethnic group
Objective:To investigate the relationship between digit ratio(2D︰4D)and body mass index(BMI),waist-hip ratio(WHR)and fat mass in Daur adults from Inner Mongolia.Methods:Using anthropometric measurements,the mean values of 2D︰4D ratios of the left hand,right hand,both hands,and the difference between the right and left hand(DR-L),as well as the mean values of BMI,WHR,and fat mass,in Daur adults from the Daur autonomous banner of Morin Dawa of Inner Mongolia were compared.The correlation between 2D︰4D and BMI,WHR,and fat mass were analyzed.Results:The 2D︰4D ratios in the left hand,right hand,and both hands were significantly higher in females than males.Correlation analysis showed that in females,the 2D︰4D ratios in the right hand,left hand,and both hands were positively correlated with BMI,waist circumference,trunk fat mass,and limb fat mass.Additionally,the 2D︰4D ratios in the right hand and both hands were positively correlated with hip circumference in females.Receiver operating characteristic curve analysis showed a certain effectiveness in screening obesity through the 2D︰4D ratio in the right hand and the average 2D︰4D ratio of both hands,the optimal tangent points of the 2D︰4D ratios in the right hand and average 2D︰4D ratio of both hands were 0.989 and 0.980,sensitivity were 46.5%and 53.5%,and specificity were 78.9%and 68.4%in females.Conclusion:There is a correlation between the 2D︰4D ratio and fat mass in Daur female adults from Inner Mongolia.
digit ratiobody mass indexwaist-to-hip ratiofat mass