The purpose of this study is to compare the effectiveness and efficiency of doing a psychoeducational group program and the conventional treatment versus individual conventional care in patients with a mild/moderate depression disorder,in urban primary healthcare centers in Barcelona city.

Nowadays, the depression is one of the public health major issues, this is because of its prevalence and its economic and social repercussions. It is fundamental for the Primary Care to assume the management of these health problems.

Design:A randomised controlled trial of two groups (intervention and control), longitudinal and prospective.

Population of study: The subjects of the study are patients of 20 to 65 years old attended in 8 urban primary healthcare centers of Barcelona city, identified by the general practitioners and nurses with diagnosis of mild/moderate depression disorder according to the BDI scale.

The intervention group receive weekly a psychoeducational group program during 12 weeks run by 2 nurses. The program have a structured content where patient is educated about the illness, pharmacological treatment, the adherence to treatment, diet and physical exercise, problem solving, and cognitive-behavioral therapy.

In the control group the depression in treated as usual with the conventional care.

Measure's tool: The evolution of patients will be monitoring up to 1 year after the inclusion by a individual interview (the first visit and 3,6 and 9 months).The Beck Depression inventory (BDI) is a self-administered questionnaire that measure the symptomatology and severity of the depression.

The analysis variables are: patient's quality of life (EuroQoL-5D scale) ,clinical variables of the patient, pharmacological prescription, anxiolytics and antidepressants consumption , sociodemographic, number of visits to primary healthcare center, number of days of labour lost and cost.

Inclusion Criteria:

• Beck Depression Inventory(BDI)>10 and <30.
• Diagnosis of mild/moderate depressive disorders.
• Signed the Informed Consent.

Exclusion Criteria:

• Patients diagnosed of severe mental psychiatric disorder,
• Patients diagnosed of a major depressive disorders,
• Patients with acute illness or near-terminal medical illness,
• using secondary mental health services,
• suicidal ideation or intentions,
• don't speak and understand spanish or/and catalan language,
• sensory or cognitive disabilities,
• illiteracy,
• does not know or not give consent to participate in the study,
• temporary residents.