Estudio de las prescripciones farmacológicas en niños a nivel de atención primaria: evaluación de los usos off-label o fuera de ficha técnica

OBJECTIVE: to evaluate the prescription profile and to assess the off-label and unlicensed uses of medicines among non-hospitalised pediatric patients. DESIGN: cross-sectional study. SETTING: pediatric units in two urban health centers and general emergency room (Hospital Materno-Infantil, Málaga). MAIN MEASUREMENTS: sociodemographics variables, reasons for consultation and information about therapeutic medications. The classification of prescriptions was established according to information requirements contained in the Summary of Products Characteristics (SPC). RESULTS: A total of 388 children were included (a subsample of 105 treated in the emergency room). Four hundred sixty-two prescriptions (involving 74 different active ingredients) were evaluated. Each infant received and average of 1,7 drugs (95% CI: 1,6-1,9). The most prescribed medicines were ibuprofen, paracetamol, amoxicillin-clavulanate and budesonide. The therapeutic group with the greatest variety of drugs was the respiratory group. 27,4% (95% CI: 23,5-31) of prescriptions were off-label and the main cause was different age (60%; 95% CI: 54,1-63), followed by different dose (21,5%; 95% CI: 18-25), different indication (12%; 95% CI: 9,2-15) and different route of administration (7%; 95% CI: 5,4-10). CONCLUSIONS: The rate of off-label uses presents intermediate figures. Around one third of the paediatric outpatients in our sample are exposed to at least one off-label or unlicensed prescription. We should, however, point out that such usage is based on scant official, quality information, although it is not necessarily incorrect. Evidence-based medicine should be encouraged to improve drug therapy in children, as well as following the rules on drugs in special situations.