Table 4.

Influence of case/control status, body mass index (BMI) and steroid use on ultrasound parameters in men and women

	Broadband attenuation (dB/MHz)		Speed of sound (m/s)
	Univariatea	Multivariateb	Univariatea	Multivariateb
	β coeff (95% Cl)	β coeff (95% Cl)	β coeff (95% Cl)	β coeff (95% Cl)
Case/Control status
control	Referent	Referent	Referent	Referent
case	−1.2 (−4.5, 2.1)	−2.6 (−6.1, 1.0)	−10.0 (−17.4, -2.6)*	−9.6 (−17.9, -1.3)*
BMI at baseline (kg/m2)	1.1 (0.6, 1.6)*	1.1 (0.6, 1.6)*	0.6 (−0.6, 1.8)	0.8 (−0.4, 2.0)
Steroids ≥3 months
no	Referent	Referent	Referent	Referent
yes	6.1 (−1.6, 13.7)	6.8 (−1.7, 15.3)	−2.2 (−19.9, 15.5)	1.5 (−18.3, 21.3)

^aunadjusted model.

^bmodel includes case/control status, BMI at baseline and steroid use.

*p < 0.05.