Feasibility and Efficacy of E-Prescribing Systems in Reducing Medication Errors Across Primary and Secondary Care

Dr. Hans Müller; Prof. Chika Eze; Dr. Maria Hernandez

Abstract

Background: Medication errors are a leading cause of adverse drug events and preventable harm in healthcare. E-prescribing systems are widely championed as a digital solution to mitigate these errors by improving legibility, reducing transcription mistakes, and offering clinical decision support. This study evaluated the feasibility and efficacy of integrating an advanced e-prescribing system in reducing medication errors across both primary and secondary care settings. Methods: A prospective observational study was conducted over 9 months in 15 primary care clinics and 3 acute care hospitals. Medication errors (prescription, dispensing, administration) were tracked before and after the full implementation of a standardized e-prescribing system. Data was collected on system adoption rates, user satisfaction, and categories of errors. Results: Implementation led to a significant 45% reduction in prescription errors (p<0.001) and a 30% reduction in dispensing errors (p<0.001). Drug-drug interaction alerts were utilized in 60% of cases. User satisfaction was high after initial adaptation. Conclusion: E-prescribing systems are feasible to implement and highly effective in substantially reducing medication errors, demonstrating their critical role in enhancing patient safety across the continuum of care. Strategic implementation with adequate training is crucial for maximizing benefits.

Keywords: e-prescribing, medication errors, patient safety, digital health, clinical decision support

Medication errors represent a significant public health concern, contributing to substantial patient morbidity, mortality, and healthcare costs globally. Errors can occur at various stages, from prescription to administration. Traditional handwritten prescriptions are particularly prone to legibility issues and transcription errors. E-prescribing systems, with their integrated clinical decision support and direct communication capabilities, offer a robust digital intervention aimed at centralizing the prescribing process, improving accuracy, and enhancing patient safety. Understanding their real-world impact and feasibility across different care settings is paramount.

The aim of the study.

This study aimed to assess the feasibility of implementing a standardized e-prescribing system and to quantify its efficacy in reducing medication errors (prescription, dispensing, and administration errors) within both primary care clinics and acute secondary care hospitals.

Material and methods.

A prospective observational study with a before-and-after design was conducted over a total of 9 months (3 months baseline, 3 months implementation, 3 months post-implementation) across 15 primary care clinics and 3 secondary care hospitals in Germany, South Africa, and Mexico. A total of 25,000 prescriptions were analyzed from the baseline period, and 30,000 prescriptions from the post-implementation period. The intervention involved the full deployment of a comprehensive e-prescribing system with integrated drug-allergy and drug-drug interaction checking, dose calculators, and formulary access. Medication errors were identified through pharmacist review, incident reports, and patient safety databases, categorized according to the National Coordinating Council for Medication Error Reporting and Prevention (NCC MERP) taxonomy. Adoption rates and user satisfaction were assessed via surveys. Statistical analysis involved chi-square tests for comparing error rates and t-tests for satisfaction scores, with significance set at p < 0.05.

Following the full implementation of the e-prescribing system, there was a statistically significant reduction in medication errors. Specifically, prescription errors (e.g., wrong drug, wrong dose, illegibility) decreased by 45% (from 1.8% to 1.0% of prescriptions, p < 0.001). Dispensing errors related to incorrect interpretation of prescriptions decreased by 30% (from 0.6% to 0.4% of dispensed medications, p = 0.003). The system's clinical decision support alerts for drug-drug interactions were triggered in 8% of all prescriptions, and were overridden in 40% of those cases after physician review. User satisfaction among prescribing physicians and pharmacists improved from a mean of 6.2/10 during initial rollout to 8.5/10 (p < 0.001) after workflow adjustments and training. The overall adoption rate reached 95% at the end of the study.

This multi-site study demonstrates the high feasibility and substantial efficacy of e-prescribing systems in significantly reducing medication errors across both primary and secondary care settings. By providing essential clinical decision support and improving communication, these systems play a pivotal role in enhancing patient safety. Successful implementation hinges on comprehensive user training, robust technical support, and continuous stakeholder engagement. E-prescribing should be considered a foundational component of any national digital health strategy aimed at building safer and more efficient healthcare systems.

1. Müller H, Schmitt A. E-prescribing in Germany: A national perspective. J Pharm Policy Pract. 2023;16(1):12-20.

2. Eze C, Nkosi B. Improving patient safety: The role of digital prescribing in African healthcare. S Afr Med J. 2022;112(7):445-451.

3. Hernandez M, Garcia L. Challenges and triumphs of e-prescribing in Latin America. Lat Am J Med Inf. 2021;15(4):180-188.

4. National Coordinating Council for Medication Error Reporting and Prevention. Taxonomy of Medication Errors. NCC MERP; 1999.

5. Institute of Medicine. To Err Is Human: Building a Safer Health System. Washington, DC: National Academies Press; 2000.