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Validity and reliability of observational methods for studying medication administration errors.

B Dean1, N Barber

  • 1Pharmacy Unit, Hammersmith Hospitals NHS Trust, London, England. bryony@cua.ulsop.ac.uk

American Journal of Health-System Pharmacy : AJHP : Official Journal of the American Society of Health-System Pharmacists
|February 24, 2001
PubMed
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Observational methods accurately assess medication administration errors (MAEs) without altering error rates. This study found high observer reliability, suggesting these methods are valid for MAE research.

Area of Science:

  • Healthcare Quality and Safety
  • Nursing Practice
  • Clinical Pharmacy

Background:

  • Observational methods are frequently used to study medication administration errors (MAEs).
  • Concerns exist regarding the potential for observation to influence behavior and affect the validity and reliability of findings.
  • The impact of observer presence and intervention on MAE rates requires thorough investigation.

Purpose of the Study:

  • To assess the validity and reliability of observational methods in studying MAEs.
  • To determine if observation or tactful interventions influence medication administration error rates.
  • To evaluate observer agreement in identifying MAEs.

Main Methods:

  • Two pharmacists observed nurses administering medications on two U.K. hospital wards over six months.

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  • Medication administration errors (MAEs) were recorded, and potentially harmful errors led to interventions.
  • Data were analyzed to compare error rates during observation vs. non-observation periods, with repeated observations, and before/after interventions. Observer reliability was calculated.

    • Main Results:

    • No significant difference was found in the documentation of omitted doses between observation and non-observation periods.
    • Medication administration error rates did not change with repeated observations or after initial interventions.
    • High observer reliability was demonstrated, with no significant difference in error detection between observers or with increased observation duration.

    Conclusions:

    • Observational methods appear valid and reliable for studying medication administration errors (MAEs).
    • The presence of observers and tactful interventions did not significantly alter MAE rates in this study.
    • Concerns regarding the impact of observational methods on MAE rates may be unfounded, supporting their continued use in research.