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Interactive Versus Static Decision Support Tools for COVID-19: Randomized Controlled Trial.

Alice Röbbelen1, Malte L Schmieding2, Marvin Kopka2,3

  • 1Division of Ergonomics, Department of Psychology and Ergonomics (IPA), Technische Universität Berlin, Berlin, Germany.

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|December 9, 2021
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Summary
This summary is machine-generated.

Static decision support tools (DSTs) for COVID-19 self-assessment were as effective as interactive DSTs in improving decision quality. Static DSTs may be more efficient for public guidance due to transparency and lower development effort.

Keywords:
COVID-19agentalgorithmclinical decision supportconsumer healthdecision makingdecision supportflowchartmedical informaticsupportsymptomsymptom checkerusability

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Area of Science:

  • Health Informatics
  • Decision Support Systems
  • Public Health

Background:

  • During the COVID-19 pandemic, many individuals sought guidance on seeking medical care for potential infections.
  • Web-based decision support tools (DSTs) were developed to aid public decision-making.
  • DSTs vary in presentation, from static flowcharts to interactive conversational agents.

Purpose of the Study:

  • To compare the effectiveness of interactive DSTs versus static flowcharts in providing decision support.
  • To evaluate the impact of DSTs on decision accuracy, certainty, and mental effort.

Main Methods:

  • Developed mock static and interactive DSTs based on CDC COVID-19 guidelines.
  • Recruited US adults online to assess 7 case vignettes using DSTs or no support.
  • Measured accuracy, decision certainty, and mental effort, alongside user perceptions of usefulness, ease of use, and trust.

Main Results:

  • Both interactive and static DSTs significantly improved assessment accuracy and decision certainty compared to no support.
  • No significant difference in decision quality or mental effort was found between interactive and static DSTs.
  • Participants rated both DSTs highly, with no significant differences in perceived usefulness, ease of use, or trust.

Conclusions:

  • For limited decision spaces like COVID-19 self-assessment, static flowcharts can be as effective as interactive tools.
  • Static DSTs offer potential advantages in transparency and development efficiency for public health guidance.
  • Further research is needed to explore DSTs in different contexts and user subgroups.