Abstract. To explore the high-frequency influencing factors of unqualified prescriptions, and promote rational drug use, the author evaluated on prescriptions of 245,352 from outpatient and emergency services using R in a large 3A hospital in 2023. Among the 245,352 prescriptions, 1,327 were evaluated as unreasonable, with a percentage of 0.54%. There were 1,368 issues related to irrational drug usage. Among the irrational prescriptions identified, the most prominent issues were inappropriate indications (59.16%) and incomplete writing in clinical diagnosis (17.78%). The departments with relatively high rates included head and neck surgery (5.94%), general medicine (3.33%), and convenient outpatient service (2.02%). The top five drugs in irrational prescriptions were Atorvastatin calcium tablets, Aspirin enteric-coated tablets, Calcium carbonate D3 tablets, Rabeprazole sodium enteric-coated tablets, and Metformin tablets, which were commonly used in chronic diseases. There was no significant correlation between the irrational rate and the professional title of the prescribing doctor. Overall, the quality of prescriptions in the hospital was satisfied, but there were still cases of irrational drug use. Hospitals should strengthen prescription review and rational drug use management to ensure the safety and effectiveness of patient medication.
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