Table 1 Outcome measures and timing of data collection
Measures | Description | |||
|---|---|---|---|---|
Baseline | 4 months | 12 months | ||
Primary outcome measures | ||||
Absence | Work absence self-reported and GP certified including duration of absence, and struggling at work | ✓ | ✓ | ✓ |
Secondary outcome measures | ||||
Pain intensity | Three questions: 0–10 scales for ‘present’, ‘usual’ and ‘least’ pain in last 2 weeks | ✓ | ✓ | ✓ |
Bothersomeness | Single question: 1–5 point scale | ✓ | ✓ | ✓ |
Change | Global Assessment of Change – one question | ✗ | ✓ | ✓ |
Return to work self-efficacy | Self-Efficacy Return to Work Questionnaire | ✓ | ✓ | ✓ |
Work performance | Stanford presenteeism scale 6 (SPS6), plus single question on performance at work | ✓ | ✓ | ✓ |
Prognostic indicators or potential mediators | ||||
Demographics | Gender, date of birth, socio-economic status (recent paid job title) | ✓ | ✗ | ✓ |
Employment | Current work situation | ✓ | ✗ | ✓ |
Episode duration | One question on duration of current episode, plus one question on time since pain-free month | ✓ | ✗ | ✗ |
Pain elsewhere | Additional pain locations indicated on a Body Manikin | ✓ | ✗ | ✗ |
Illness perceptions | Musculoskeletal Illness Perceptions Questionnaire Revised (IPQ-R) Short-Form | ✓ | ✓ | ✓ |
Symptoms of anxiety and depression | Hospital Anxiety and Depression Questionnaire (HADs) | ✓ | ✓ | ✓ |
Pain self- efficacy | Pain Self Efficacy Questionnaire (PSEQ) | ✓ | ✓ | ✓ |
Attitudes & beliefs (patients) re. work & health | Newly developed questionnaire | ✓ | ✓ | ✓ |
Content of GP/NP consultation | Questions regarding topics covered by the GP/NP (including work) | ✓ | ✗ | ✓ |
Treatment satisfaction | Question regarding satisfaction with treatment | ✗ | ✓ | ✗ |
Health economic measures | ||||
Health care utilisation | Health Care Utilisation Questions | ✗ | ✗ | ✓ |