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Table 4 Influence of case/control status, body mass index (BMI) and steroid use on ultrasound parameters in men and women

From: Influence of Inflammatory Polyarthritis on Quantitative Heel Ultrasound Measurements

  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)
  1. aunadjusted model.
  2. bmodel includes case/control status, BMI at baseline and steroid use.
  3. *p < 0.05.