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Table 4 Correlation data for the hip OA (n = 117) and knee OA (n = 284) groups at baseline

From: The Dutch Lower Extremity Functional Scale was highly reliable, valid and responsive in individuals with hip/knee osteoarthritis: a validation study

 

Correlation with LEFS

Hip group

Knee group

r (95%-CI)

r (95%-CI)

HOOS/KOOS

  

 Pain

0.71 (0.60 – 0.79)

0.65 (0.58 - 0.72)

 Symptoms

0.56 (0.41 – 0.67)

0.42 (0.32 – 0.52)

 Function, daily living

0.78 (0.69 – 0.84)

0.78 (0.73 – 0.83)

 Function, sports and recreation

0.74 (0.64 – 0.82)

0.63 (0.55 – 0.70)

 Quality of life

0.72 (0.62 – 0.80)

0.60 (0.52 – 0.67)

SF36

  

 Pain

0.51 (0.35 – 0.64)

0.66 (0.59 – 0.72)

 Functioning

0.82 (0.75 – 0.88)

0.81 (0.77 – 0.85)

HADS

  

  Anxiety

−0.25† (-0.42 – -0.07)

−0.10 (-0.22 – 0.02)

  Depression

−0.30† (-0.46 – -0.12)

−0.28 (-0.38 – -0.16)

  CIS

−0.55† (-0.67 – -0.41)

−0.47 (-0.56 – -0.37)

  1. †Due to the inverted scales, the correct interpretation of negative associations is that more anxiety/depression/fatigue is associated with worse function.
  2. Abbreviations: CIS = Checklist Individuals Strength, HADS = Hospital Anxiety and Depression Questionnaire, HOOS = Hip Osteoarthritis and Outcome Score, IQR = Inter-quartile range, KOOS = Knee Osteoarthritis and Outcome Score, LEFS = Lower Extremity Functional Scale, OA = osteoarthritis.