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Table 2 Linear regression analysis of variables associated with Cortical Distance

From: Proximal femoral anatomy and collared stems in hip arthroplasty: is a single collar size sufficient?

Variable Univariable Multivariable
regression coefficient 95% C.I. p-value regression coefficient 95% C.I. p-value
Continuous
 Age (years) −0.04 (−1.27 – -0.22) 0.006 −0.02 (−0.04–0.00) 0.093
 Medio-lateral offset 0.28 (1.76 – 2.63) <0.001 0.04 (−0.04–0.11) 0.352
 Femoral head diameter 0.30 (1.03 – 1.98) <0.001 0.14 (0.03–0.26) 0.016
 Femoral Neck Angle 0.00 (−0.46 – 0.51) 0.929 0.01 (−0.03–0.06) 0.596
Catagoric
 Stem size
  Small (1–3) REF     REF   
  Medium (4–6) 0.82 (−0.08 – 1.73) 0.075 0.39 (−0.374–1.15) 0.317
  Large (7–10) 1.48 (0.47 – 2.50) 0.004 0.93 (−0.031–1.88) 0.058
 Varus stem model 2.74 (2.12 – 3.37) <0.001 2.42 (1.71–3.14) <0.001
 Male Gender 2.11 (−2.87 – -1.35) <0.001 0.68 (−1.574–0.21) 0.132