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Table 3 Spearman correlation coefficients and mean absolute errors between bone mineral density values from DXA and CT HU texture analysis according to with central obesity / without central obesity

From: The impact of obesity on the accuracy of DXA BMD for DXA-equivalent BMD estimation

Correlation Coefficient (Mean absolute error)

DXA based clinical BMD (g/cm2)

L1 BMD (g/cm2)

Total Hip BMD (g/cm2)

L1 BMC (g)

Total Hip BMC (g)

L1 estimated BMD by CT HU texture analysis

BMI (kg/m2)

Analysis 1 A.—Normal weight if < 25 kg/m2

0.7900 (0.0548)

0.7539 (0.0642)

0.7651 (1.5325)

0.7354 (0.4231)

Analysis 1 B.—Overweight and obese weight if > 25 kg/m2

0.6657 (0.0625)

0.7712 (0.0573)

0.742 (1.6444)

0.7768 (0.3967)

WC (cm)

Analysis 2 A.—Without central obesity if < 88 cm

0.7849 (0.0555)

0.7558 (0.0635)

0.7662 (1.5220)

0.7419 (0.4204)

Analysis 2 B.—central obesity > 88 cm

0.6542 (0.0644)

0.7666 (0.0577)

0.7351 (1.6715)

0.7639 (0.4075)

ICO

Analysis 3 A.—Without central obesity if < 0.5

0.8125 (0.0517)

0.7488 (0.0659)

0.7796 (1.4526)

0.7418 (0.4295)

Analysis 3 B.—Central obesity if > 0.5

0.6594 (0.0658)

0.7843 (0.0576)

0.7303 (1.7153)

0.7545 (0.4210)