Table 1 Study variables
Instrument | Assessment area | Time (s) of assessment |
|---|---|---|
Brief Pain Inventory (BPI). Average pain scale | Pain severity | Screening |
Patient Health Questionnaire (PHQ-9) | Depression symptoms | Screening |
Sociodemographic data form | Age, sex, marital status, educational level, labour status, social class | Baseline |
SCID (DSM-IV). Major depression module | Major depression diagnoses | Baseline |
Duke Severity of Illness Checklist (DUSOI) | Medical comorbidity | Baseline |
PRIME-MD. Anxiety and dysthymia modules | Common psychiatric comorbidity | Baseline |
Brief Pain Inventory (BPI). | Pain severity and interference | Baseline, 3, 6 and 12 months |
Hopkins Symptom Checklist (HSCL-20) | Severity of depressive symptoms, remission and response rates | Baseline, 3, 6 and 12 months |
EuroQoL-5D | Health-related quality of life | Baseline, 3, 6 and 12 months |
Sheehan Disability Inventory (SDS) | Disability due to psychological problems | Baseline, 3, 6 and 12 months |
Form | Days of disability leave from work or interference with usual activities in the last month | 3, 6 and 12 months |
Patient Global Impression of Change (PGIC) | Patient’s perspective about the efficacy of treatment | 3, 6 and 12 months |
Use of health resources questionnaire | Number of primary care, specialist and emergency visits, and hospitalisations due to mental health or pain problems | 3, 6 and 12 months |
Satisfaction with care form | Patient’s satisfaction with clinical care received for depression and pain problems | 3, 6 and 12 months |
Exploration of the computerised database of pharmaceutical prescription and invoicing | Pharmacological treatments for pain and depression. Medical prescription and patient consumption | 3, 6 and 12 months |