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Development of an adverse-event coping scale (AECS) using item response theory
Taehwan Park1, Ronald S Hadsall2, Jon C Schommer2
1Pharmacy Administration, St. Louis College of Pharmacy, 4588 Parkview Place, St. Louis, MO 63110, USA.
Research in Social & Administrative Pharmacy : RSAP
|January 17, 2015
Summary
This study developed an Adverse Event Coping Scale (AECS) to measure patient coping responses to adverse drug events (ADEs). A high score indicates a serious ADE prompting significant coping efforts.
Area of Science:
- Pharmacovigilance
- Health Psychology
- Psychometrics
Background:
- Adverse drug events (ADEs) contribute significantly to patient morbidity and mortality.
- Patient coping strategies for ADEs are crucial for timely interventions.
Purpose of the Study:
- To develop and validate the Adverse Event Coping Scale (AECS).
- To measure patients' coping responses to their adverse drug events.
Main Methods:
- Item response theory (IRT) for item calibration and reliability assessment.
- Confirmatory factor analysis to establish scale structure.
- Convergent validity assessed through correlations with related scales.
Main Results:
- A reliable 11-item, one-dimensional AECS was developed (reliability coefficient = 0.82).
- AECS scores positively correlated with ADE seriousness and health literacy.
- Scores reflect problem magnitude and coping effort, not solely coping efficacy.
Conclusions:
- The AECS quantifies patient coping efforts in response to serious ADEs.
- The AECS and its short-form aid clinicians in understanding patient ADE coping mechanisms.
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