The consumption of alcohol and other drugs is one of the main risk factors for traumatism. In addition, patients who have suffered an accident in relation to the consumption of these substances present a high risk of recidivism. In the case of alcohol, its relationship with traumatisms has been known for many years now and is still one of the main risk factors.

Secondary prevention is an important area of action and improvement in the treatment of this type of patient by considering actions, such as a brief motivational intervention, in order to avoid recidivism. The objective of motivational intervention is to make the patient aware of the relationship between the consumption of these substances and the accident, and induce them to carry out a change in habits.

The objective of the present investigation project is to determine the efficacy of secondary prevention in reducing recurrence of traumatisms. In order to this, a multicenter randomised controlled trial has been designed in which the intervention group with patients admitted for sever traumatism with positive screening for alcohol or other drugs, will be submitted to a brief motivational intervention. The main outcome will be trauma recurrence within a three year follow-up.

Inclusion Criteria:

• Sever trauma patients defined as the need of assistance in a critical unit.
• Positive screening for alcohol o other drugs (cannabis, cocaine, methamphetamine).

Exclusion Criteria:

• Patients in treatment for abuse of alcohol and other drugs.
• Death during hospitalization.
• Non Catalonia residents.
• Not Spanish or Catalan spoken.