A usability study of an innovative optical device for the diagnosis of schistosomiasis in Nigeria

Conference paper (2022)

Authors

M.L. Bengtson Leiden University Medical Center

A.A. Onasanya Design for Sustainability -

P.O. Oyibo Team Michel Verhaegen - Mechanical, Maritime and Materials Engineering

Brice Meulah Leiden University Medical Center

K.T. Samenjo Design for Sustainability -

I.G. Braakman Student

Wellington Oyibo Andi Lagos State University

J.C. Diehl Design for Sustainability -

Research Group

Design for Sustainability () (TU Delft)

DOI: https://doi.org/10.1109/GHTC55712.2022.9911019

Usability Resource-limited settings Digital optical device Chistosomiasis Mixed-model questionnaire

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Published Date

2022

Language

English

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Faculty

Industrial Design Engineering

Department

Sustainable Design Engineering

Research Group

Design for Sustainability

Abstract

Schistosomiasis is a neglected tropical disease thatis predominantly diagnosed by conventional microscopy in Sub-Saharan Africa. However, effective diagnosis by conventional microscopy is limited by multiple technical and logistic barriers.Alternative diagnostic techniques are needed. The Schistoscope is a digital optical device that has been designed to support microscopists for the detection of schistosomiasis in endemic resource-limited settings. Aim: A user-centered design approachwas used to assess the usability and user-acceptance of the Schistoscope compared to conventional microscopy in the Federal Capital Territory, Abuja, Nigeria. In this study, usability and acceptance are defined as being easy-to-use, efficient, and suitable in the daily workflow by end-users. Methods: Using a qualitative conventional context analysis approach, a mixedmethods questionnaire was used to elucidate themes related to the usability and user-acceptance of the device. Participants included trained microscopists and university students (n=17). Results: Participants answered both ranked and open questions. Overall the device’s use was considered to be easy and acceptable
in the routine workflow of a microscopist. The auto-scan feature was considered to have added value. Critical feedback regarding aesthetics of the device, particularly related to size, was noted by the participants. Conclusion: The usability approach used in this study elucidated valuable insights of end-users. The Schistoscope was very well perceived by both medical students and trained microscopists. Critical feedback will be used to further improve the next iterative design of the device.

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- Embargo expired in 11-04-2023