[Evidence-based health care].

Health care evidence based is a 90's trend of health professionals interested in the scientific development of effectiveness and efficiency research into the health management and introducing scientific evidence into the health decision-making process. The development of health services research, outcome management and evidence based medicine, makes possible the new orientation of heath systems toward health care evidence based. That means health services provided with the maximum quality, effectiveness, appropriateness and taking into account the informed patients preferences. If we want to see health care evidence based fully working among managers and clinicians, we need the development of information systems directed to the measurement of clinical outcomes in terms of effectiveness and efficiency, as well as specific plus tailored training programs and, pushing focused research areas into the improvement of health services provided at hospital and primary care levels.