The increase in PGP showed that prescribing for generic preparations improved. Statistical quality control tests were useful in evaluating and tracking the results of the intervention, and were indispensable for monitoring and promptly detecting opportunities to improve prescribing behavior and take appropriate measures.

Limitations. Using a new DI classification make difficult external comparisons, although it is useful because we use generalised and prestigious data sources. Applicability. The project produces a tool to avoid prescription errors. Checking the effectiveness in different corrective measures allows to take reasoned decisions for future interventions in quality care.