[A drug prescription study in chronic pathology at a primary care center]. / Estudio de la prescripción de fármacos por patologías crónicas en un centro de asistencia primaria.

To evaluate the characteristics of the drug used for the therapy of chronic diseases, 1588 prescriptions from a sample of 549 continued drug prescription forms were evaluated. Every patient had a mean number of 2.9 drugs, 2.14 diagnoses and 1.41 drugs per diagnosis. The patients over 65 years had a higher number of drugs and diagnoses. A smaller number of diagnoses but a higher number of drugs per diagnoses was found for males. The drug subgroups with higher prescription rates were cardiac drugs (12.3%), diuretics (11.2%) and analgesics (9.9%). The most common diagnoses were hypertension and osteoarthritis, with 17.6% and 13.6% of prescriptions, respectively. A high rate of patients receiving vasodilators (12%) and benzodiazepines (14.7%) was found. The usefulness of the continued prescription forms for the control of chronic treatments is emphasized.