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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).