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Table 4 Simple and multiple linear regression of KSS total-post score

From: Predictive value of adipose to muscle area ratio based on MRI at knee joint for postoperative functional outcomes in elderly osteoarthritis patients following total knee arthroplasty

  Simple linear regression Multiple linear regression
β 95% CI p β 95% CI p
Age 0.021 − 0.494 to 0.535 n.s    
BMI − 1.740 − 2.867 to − 0.614 0.003 − 0.727 − 2.028 to 0.574 n.s
Sex 0.153 − 4.924 to 5.230 n.s    
AMR − 6.817 − 10.134 to − 3.500 0.000 − 5.573 − 9.564 to − 1.582 0.007
Side 3.159 − 1.867 to 8.814 n.s    
KSS total-pre 0.069 − 0.052 to 0.189 n.s    
HSS-pre 0.235 − 0.063 to 0.533 n.s    
  1. CI confidence interval, n.s nonsignificant, BMI body mass index, AMR adipose to muscle area ratio, KSS score the Knee Society Score, HSS score the Hospital for Special Surgery knee score