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Table 3 Simple and multiple linear regression of HSS-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 0.043 − 0.179 to 0.265 n.s    
BMI − 0.599 − 1.096 to − 0.102 0.019 − 0.166 − 0.742 to 0.410 n.s
Sex − 0.361 − 2.551 to 1.828 n.s    
AMR − 2.587 − 4.054 to − 1.120 0.001 − 2.223 − 3.990 to − 0.455 0.014
Side 0.727 − 1.458 to 2.912 n.s    
KSS total-pre 0.046 − 0.005 to 0.097 0.078 0.018 − 0.105 to 0.141 n.s
HSS-pre 0.115 − 0.013 to 0.243 0.078 0.060 − 0.248 to 0.368 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