RESUMEN
A medical prescription may sometimes include errors which might have a negative impact on the patient's health. The objective of this study was to analyse the key elements of medical prescriptions given to patients covered by the Ouagadougou social security health insurance system. The population of practitioners included in the study comprises all of the medical doctors practicing in Ouagadougou. The study consisted of a review of all prescriptions registered by the family benefits and professional hazards service branches dating from January 1st to December 31st 1997. The identification of the doctors and patients was satisfactory in more than 97% of the prescriptions. However, certain errors were frequent such as the omission of the treatment's duration, the medication's dosage, and the form. The oversights observed were comparable to those described in the literature. Repeating similar periodic evaluations with a systematic feedback relayed to the practitioners will bring about an improvement of medical prescriptions.