How to Estimate Fat Mass in Overweight and Obese Subjects

Table 2

Predictive value of BIA and BMI towards DXA.

		DXA
		Nonobese; (FM < 25% M, < 35% F)	Obese; (FM ≥ 25% M, ≥ 35% F)
BMI	<30 kg/m^2; ≥30 kg/m^2	2; 0	53; 48	Overall predictive value: 48.5%; Sensitivity: 47.5%; Specificity: 100%; Positive predictive value: 100%; Negative predictive value: 3.6%
BIA	Non-obese (FM < 25% M, 35% F); Obese (FM ≥ 25% M, 35% F)	2; 0	15; 85	Overall predictive value: 85.3%; Sensitivity: 85%; Specificity: 100%; Positive predictive value: 100%; Negative predictive value: 11.8%