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Table 1 Summary of primary and secondary outcome measures collected to determine treatment effectiveness

From: Unloading shoes for osteoarthritis of the knee: protocol for the SHARK randomised controlled trial

Outcome Measurement tool
Primary  
Knee pain on walking 11-point numerical rating scale
Physical function WOMAC physical function subscale
Secondary  
Global rating of change in: 7-point scales
 i) Knee pain
 ii) Physical function
Knee pain WOMAC pain subscale
Knee pain ICOAP
Knee stiffness WOMAC stiffness subscale
Health-related quality of life AQoL-6D
Physical activity PASE
  1. WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index; PASE = physical activity scale for the elderly; ICOAP = Intermittent and Constant Osteoarthritis Pain questionnaire; AQoL-6D = Assessment of Quality of Life instrument (version 6D).