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Table 3 Uni- and multi-variable regression analysis of Harris Hip Score

From: Absence of instabilities and intra-prosthetic dislocations at 7 to 11 years following THA using a fourth-generation cementless dual mobility acetabular cup

Variable Univariable Multivariable (n = 157)*
β 95% C.I. p-value β 95% C.I. p-value
Preoperative data
 Age at index operation (yrs) −0.40 (− 0.76 – –0.04) 0.030 −0.38 (− 0.74 – –0.02) 0.039
 Body Mass Index (BMI) − 0.12 (− 0.59 – 0.35) 0.603    
 Male sex 1.41 (−2.88 – 5.71) 0.517    
Etiology
Primary arthrosis REF      
Secondary arthrosis 0.93 (−6.95 – 8.81) 0.816    
Avascular necorsis 3.07 (−4.53 – 10.66) 0.427    
Charnley grade
A REF    REF   
B 1.88 (−5.49 – 9.24) 0.615 1.25 (−6.03 – 8.53) 0.735
C −4.89 (9.94 – 0.15) 0.057 −4.76 (−9.73 – 0.21) 0.061
Intraoperative data
 Stem size −0.47 (−1.81 – 0.87) 0.491    
 Cup size − 0.01 (− 0.75 – 0.73) 0.976    
Stem type
Standard - KA REF      
High offset - KHO 4.10 (−3.72 – 11.91) 0.302    
Lateralized - KLA 1.84 (−2.52 – 6.20) 0.406    
REF
−2.25   (−6.88 – 2.37) 0.338    
  1. *Backward selection (p = 0.15) was used to identify variables to include in the multivariabla analysis