Overview of secondary outcome measures
| Secondary outcome measure | Instrument |
| Pain (intensity, interference) | Brief Pain Inventory (BPI)43 |
| General and domain-specific pain-related disability | Pain Disability Index (PDI)44 |
| Perceived improvement | Patient Global Impression of Change (PGIC) scale45 |
| Depression | Patient Health Questionnaire-9 (PHQ-9)46 |
| Health-related quality of life | Short Form-36 Health Survey (SF-36)47 |
| Anxiety | General Anxiety Disorder-7 (GAD-7)48 |
| Self-efficacy | Pain Self Efficacy Questionnaire (PSEQ)49 |
| Catastrophising | Pain Catastrophising Scale (PCS)50 |
| Fear of pain and consequent avoidance of physical activity | Fear Avoidance Belief Questionnaire (FABQ)51 |
| Participants gender, age, occupation, relationship status, level of education, pain diagnosis, years with CP | Initial online questionnaire |
CP, chronic pain.