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Table 8 Accelerometer regression (dependent variable was average metabolic equivalent tasks (METS)/day)

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:    
BMI -0.074 0.013 < 0.001
Age -0.039 0.010 < 0.001
OA grade -0.512 0.171 0.003
Depression -0.618 0.301 0.042
SF-36 PF 0.011 0.005 0.019
KOOS Pain -0.011 0.006 0.073
  F value Significance Model fit
Overall model 12.086 < 0.001 R2 = 0.356
Women:    
SF-36 PF 0.016 0.006 0.004
BMI -0.074 0.015 < 0.001
Age -0.050 0.011 < 0.001
OA grade -0.466 0.187 0.019
Women only model 13.284 < 0.001 R2 = 0.354
Men:    
BMI -0.079 0.024 0.002
Age -0.033 0.017 0.061
Men only model 6.269 0.004 R2 = 0.218
  1. BMI = body mass index; KOOS = Knee Injury and Osteoarthritis Outcome Score; OA = osteoarthritis; PF = physical function; SF-36 = Short-Form 36.