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Table 1 Study variables

From: Assessment of an enhanced program for depression management in primary care: a cluster randomized controlled trial. The INDI project (Interventions for Depression Improvement)

Instrument Assessment area Applied by Time(s) of assessments
Sampling form Age, sex, inclusion/exclusion criteria Primary care physicians Baseline
Sociodemographic data form Age, sex, marital status, educational level, labour status, social class Research interviewer by means of telephonic interview Baseline
Duke Severity of Illness Checklist (DUSOI) Global severity of physical comorbidity Primary care physicians Baseline
PRIME-MD; dysthymia and anxiety modules Common psychiatric comorbidity Primary care physicians Baseline
Patient Health Questionnaire (PHQ-9) Severity of depressive symptoms, remission and response rates Research interviewer by means of telephone interview Baseline, 3, 6 and 12 months
Questionnaire Length of evolution of current depressive episode and previous history of depression. Research interviewer by means of telephone interview Baseline
SF-12 Health Survey Health-related quality of life: mental health and physical health scores Research interviewer by means of telephone interview Baseline, 3, 6 and 12 months
Morisky-Green Test Treatment adherence Research interviewer by means of telephone interview Baseline, 3, 6 and 12 months
Use of health resources questionnaire Number of primary care, psychiatric and emergency visits, and hospitalisations owing to mental health problems Research interviewer by means of telephone interview 3, 6 and 12 months
Satisfaction with the care received Satisfaction of the patient with the clinical care got for his depression Research interviewer by means of telephone interview 3, 6 and 12 months
Exploration of the computer database of pharmaceutical prescription and invoicing Treatment with antidepressants. Medical prescription and consumption by the patient. Research assistant 3, 6 and 12 months