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Table 3 Summary of outcome measures and time points

From: Internet-mediated physiotherapy and pain coping skills training for people with persistent knee pain (IMPACT – knee pain): a randomised controlled trial protocol

Primary outcome measures Data collection instrument Collection points
Average walking pain in past week 11-point numeric rating scale 0, 3¥, and 9 months
Physical function in past 48 hours WOMAC osteoarthritis Index physical function subscale 0, 3¥, and 9 months
Secondary outcome measures   
Pain in past 48 hours WOMAC osteoarthritis Index pain subscale 0, 3 and 9 months
Perceived change overall 7-point ordinal scale 3 and 9 months
Perceived change in pain 7-point ordinal scale 3 and 9 months
Perceived change in function 7-point ordinal scale 3 and 9 months
Health-related quality of life Assessment of Quality of Life questionnaire (AQoL2) 0, 3 and 9 months
Self-reported psychological measures Arthritis self-efficacy scale 0, 3 and 9 months
  Coping Strategies questionnaire (CSQ) 0, 3 and 9 months
  Pain Catastrophizing Scale (PCS) 0, 3 and 9 months
Other measures   
Adherence to intervention Number of physiotherapy sessions attended During intervention
  Weekly home exercise log books During intervention
  PainCOACH module completion During intervention
  PainCOACH practice via COACHTrack/ log books During intervention
  Home exercises - 11-point numeric rating scale 3, 6 and 9 months
  Frequency of home exercise sessions previous 2 weeks 3, 6 and 9 months
  Frequency of pain coping skills in previous 2 weeks 3, 6 and 9 months
  Educational material accessed in previous 3 months 3, 6 and 9 months
Adverse events and harms Questionnaire 3, 6 and 9 months
Health cost data Questionnaire 9 months
Descriptive information Questionnaire 0 months
Medications and co-interventions Questionnaire 0, 3, 9 months
Treatment benefit expectations 5-point ordinal scale 0 months
Process measures   
Treatment satisfaction Questionnaire 3 months
Appropriateness of the intervention Program (System) usability scale 3 months
  1. ¥Primary outcomes and primary time point.