Skip to main content

Table 5 Linear models including group, speed, BMI and age as covariate comparing healthy controls (H), patients with hip osteoarthritis (OA) and with unilateral total hip arthroplasty (THA)

From: Different reliability of instrumented gait analysis between patients with unilateral hip osteoarthritis, unilateral hip prosthesis and healthy controls

 

ANOVA linear model

Linear regression

All 3 groups

H vs OA

H vs THA

OA vs THA

p-value

Estimate* (95% C.I.)

p-value

Estimate* (95% C.I.)

p-value

Estimate* (95% C.I.)

p-value

Hip extension degree

< 0.001

6.18 (0.68 to 11.68)

0.029

6.47 (0.49 to 12.45)

0.035

0.65 (−5.76 to 7.07)

0.84

Hip flexion degree

0.706

−0.95 (− 5.40 to3.50)

0.67

1.98 (− 2.91 to 6.85)

0.42

3.27 (−1.32 to 7.85)

0.16

Hip ext./flex range degree

< 0.001

−7.15 (−10.48 to − 3.81)

< 0.001

− 4.53 (− 7.47 to − 1.60)

0.003

2.60 (− 0.81 to 6.00)

0.13

Hip adduction degree

0.356

2.11 (− 0.83 to 5.04)

0.15

1.44 (− 0.68 to 3.55)

0.17

− 1.11 (− 3.54 to 1.32)

0.36

Hip abduction degree

0.065

− 0.38 (−2.92 to 2.17)

0.78

− 0.21 (− 2.46 to 2.03)

0.85

0.29 (− 1.76 to 2.34)

0.77

Hip add/abd range degree

0.001

−2.47 (−5.21 to 0.28)

0.076

−1.62 (− 4.16 to 0.90)

0.20

1.40 (− 0.37 to 3.18)

0.12

Hip adduction moment Nm/kg

0.170

−0.16 (− 0.03 to 0.04)

0.11

− 0.08 (− 0.009 to 0.10)

0.10

0.11 (− 0.009 to 0.07)

0.25

Hip abduction moment Nm/kg

0.003

0.03 (−0.37 to 0.04)

0.34

0.05 (−0.18 to 0.02)

0.10

0.03 (−0.08 to 0.30)

0.13

Hip add/abd moment range Nm/kg

0.041

−0.19 (− 0.40 to − 0.007)

0.058

−0.12 (− 0.24 to − 0.007)

0.039

0.08 (− 0.10 to 0.26)

0.37

  1. P-values for the overall comparison (ANOVA), p-values and estimates for the comparison between groups are presented (Linear regression)
  2. *Beta-value