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Table 3 Interaction and stratified analyses between alignment techniques (MA as reference) and KSS score

From: How to choose kinematic or mechanical alignment individually according to preoperative characteristics of patients?

Subgroup

β, 95% CI

P-value

P-value for interaction

Sex

  

0.684

 Male

1.01 (−1.06, 2.08)

0.793

 

 Female

1.48 (−4.89, 6.92)

0.813

 

Age, years

  

0.076

  < 65

1.53 (−2.40, 5.45)

0.793

 

  ≥ 65

1.07 (−1.30, 2.76)

0.452

 

BMI, kg/m^2

  

0.028*

  < 30

1.48 (−1.81, 5.17)

0.274

 

  ≥ 30

−1.66 (−4.08, −0.46)

0.039*

 

Preoperative HKA angle

  

0.013*

  < 10° varus

0.52 (−0.99, 0.95)

0.983

 

  ≥ 10° varus

2.44 (0.53, 4.63)

0.042*

 

Preoperative ROM

  

0.668

  < 90°

0.82 (−1.74, 2.59)

0.702

 

  ≥ 90°

0.42 (−2.48, 3.31)

0.78

 

Preoperative total KSS

  

0.583

 Tertile low

−0.84 (−2.04, −0.15)

0.328

 

 Tertile middle

1.04 (−0.12, 3.21)

0.565

 

 Tertile high

0.21 (−2.13, 2.55)

0.859