Table 3 Summary of outcome measures and time points
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 |