The practice of Internal Medicine in Andalusia follows the evidence-based medicine basic principles

Bases. To know the proportion of medical intevenciones carried out in the Services of Internal Medicine of the public hospitals of Andalusia based on randomized clinical trials. Patients and methods. We have analyzed the primary treatments prescribed in a random sample of 326 patients admitted to these Internal Medicine services during 1998. Results. One hundred and forty-three of the 326 treatments analyzed (43.9%) were based in clinical trials and 135 (41.4%) were interventions unanimously accepted by the medical community without being based in clinical trials. Conclusions. Most of the primary Andalusian treatments prescribed in the Internal Medicine services are evidence-based.