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Table 1 Study variables

From: Evaluation of a multicomponent programme for the management of musculoskeletal pain and depression in primary care: a cluster-randomised clinical trial (the DROP study)

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