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Related Experiment Videos

Evaluation of computer support for prescribing (CAPSULE) using simulated cases

R T Walton1, C Gierl, P Yudkin

  • 1Department of Public Health and Primary Care, Radcliffe Infirmary, Oxford. robert.walton@public-health.oxford.ac.uk

BMJ (Clinical Research Ed.)
|November 5, 1997
PubMed
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Computer support significantly improved general practitioners' prescribing quality, reducing instances where cheaper, effective drugs were overlooked. Most doctors found the system easy to use and would likely adopt it in practice.

Area of Science:

  • Medical Informatics
  • Clinical Practice
  • Health Services Research

Background:

  • General practitioners (GPs) face challenges in optimal drug prescribing.
  • Computer decision support systems (CDSS) show potential to improve prescribing quality.
  • Evaluating different levels of computer support is crucial for effective implementation.

Purpose of the Study:

  • To assess the impact of computer support on GP prescribing practices.
  • To compare the effectiveness of three distinct levels of computer-assisted prescribing support.
  • To determine GP acceptance and usability of the support system.

Main Methods:

  • A crossover experiment with a balanced block design was employed.
  • Fifty general practitioners were randomly sampled, with 42 participating.

Related Experiment Videos

  • Three computer support levels (control, limited, full) were tested using simulated patient cases.

    • Main Results:

    • Computer support significantly enhanced prescribing quality (P < 0.001).
    • The frequency of overlooking cheaper, equally effective drugs decreased from 50% (control) to 35-36% with support.
    • Prescribing scores improved, and 88% of doctors found the system easy to use.

    Conclusions:

    • Computer support effectively improves adherence to prescribing guidelines.
    • The system reduces the omission of cost-effective medication choices.
    • The usability and likely adoption of the system by GPs were high.