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Designing a Tablet-Based Software App for Mapping Bodily Symptoms: Usability Evaluation and Reproducibility Analysis.

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Summary

A new tablet app for symptom drawing was developed and improved for usability in chronic pain patients and doctors. The enhanced app shows excellent reproducibility for pain extent and good usability, aiding in pain assessment.

Keywords:
appbody outlinechronic paineHealthpain drawingreproducibilitysymptom drawingtablet computersusability testing

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Area of Science:

  • Digital Health
  • Human-Computer Interaction
  • Pain Management

Background:

  • Symptom drawings are crucial for pain assessment in clinical and research settings.
  • Tablet-based digital drawings offer advantages over traditional methods.
  • Usability is paramount for patient accessibility, especially for elderly or impaired individuals.

Purpose of the Study:

  • Develop a tablet app for collecting patient and doctor symptom drawings.
  • Evaluate the app's usability with chronic pain patients and doctors.
  • Assess the app's test-retest reliability for symptom drawings.

Main Methods:

  • Two app versions were developed and tested across two studies with 103 chronic pain patients and their doctors.
  • Usability was assessed via questionnaires; the app was iteratively improved based on study 1 feedback.
  • Test-retest reliability was analyzed in a subgroup of 25 patients.

Main Results:

  • App improvements significantly enhanced patient usability, including body outline identification and symptom depth evaluation.
  • The final app version demonstrated good usability scores from doctors (System Usability Scale: 75.63).
  • Excellent test-retest reproducibility was found for pain extent (ICC=0.92), with good results for symptom clusters and pattern overlap.

Conclusions:

  • A user-centered, tablet-based symptom drawing app was successfully developed and refined.
  • The improved app offers enhanced usability and reliable symptom data collection for chronic pain.
  • Patient usability feedback is essential for designing effective eHealth applications.