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Table 4 Function regression (dependent variable was gait speed test)

From: Women with knee osteoarthritis have more pain and poorer function than men, but similar physical activity prior to total knee replacement

Predictor variable β Standard error P value
All subjects:    
Knee extension -5.013 2.555 0.051
Age -8.306 1.695 < 0.001
Knee flexion 3.374 1.180 0.005
Sex -80.966 34.717 0.021
Opioid medications -2.489 1.083 0.023
Pain duration 38.014 18.334 0.040
Pain catastrophizing -3.294 1.644 0.047
BMI -4.283 2.393 0.075
Heat pain threshold 10.090 5.278 0.058
  F value Significance Model fit
Overall model 9.062 < 0.001 R2 = 0.345
Women:    
Age -9.749 1.802 < 0.001
Knee flexion 3.170 1.094 0.004
Opioid medications -2.829 1.097 0.011
Pain catastrophizing -3.538 1.847 0.058
BMI -4.525 2.625 0.087
Women only model 10.630 < 0.001 R2 = 0.312
Men:    
Knee extension -13.302 5.159 0.012
Age -4.755 2.830 0.098
Men only model 4.358 0.017 R2 = 0.129
  1. BMI = body mass index.