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Table 4 Influence of various patient characteristics on the variability of measurements estimated as the absolute difference between the first liver stiffness measurement and the mean of 3 liver stiffness measurements. Multivariable logistic regression analysis predicting the upper tertile of variability

From: 2D-shear wave elastography: number of acquisitions can be reduced according to clinical setting

Variable Odds ratio Lower 95% CI Upper 95% CI Z value P value
Age ≥ 50 years 0.966 0.486 1.919 − 0.099 0.9212
BMI ≥ 25 kg/m2 3.405 1.788 6.483 3.729 0.0002
Etiology
 Viral versus alcohol 0.371 0.149 0.921 − 2.137 0.0326
 Other versus alcohol 0.651 0.235 1.808 − 0.823 0.4103
AST ≥ 50 (IU/L) 0.910 0.466 1.774 − 0.278 0.7812
Bilirubin ≥ 20 (µmol/L) 2.069 1.005 4.257 1.974 0.0484
LSM ≥ 7.1 kPa 3.928 1.583 9.744 2.951 0.0032
  1. AST aspartate aminotransferase, BMI body mass index, LSM liver stiffness measurement