The value of Retrospective and Concurrent Think Aloud in formative usability testing of a physician data query tool

Journal of Biomedical Informatics
Linda W P PeuteMonique W M Jaspers

Abstract

To compare the performance of the Concurrent (CTA) and Retrospective (RTA) Think Aloud method and to assess their value in a formative usability evaluation of an Intensive Care Registry-physician data query tool designed to support ICU quality improvement processes. Sixteen representative intensive care physicians participated in the usability evaluation study. Subjects were allocated to either the CTA or RTA method by a matched randomized design. Each subject performed six usability-testing tasks of varying complexity in the query tool in a real-working context. Methods were compared with regard to number and type of problems detected. Verbal protocols of CTA and RTA were analyzed in depth to assess differences in verbal output. Standardized measures were applied to assess thoroughness in usability problem detection weighted per problem severity level and method overall effectiveness in detecting usability problems with regard to the time subjects spent per method. The usability evaluation of the data query tool revealed a total of 43 unique usability problems that the intensive care physicians encountered. CTA detected unique usability problems with regard to graphics/symbols, navigation issues, error messages, and the organi...Continue Reading

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Mar 26, 2011·International Journal of Medical Informatics·R KhajoueiM W M Jaspers
Jul 26, 2011·International Journal of Medical Informatics·Johanna ViitanenIlkka Winblad

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Citations

Oct 23, 2016·Journal of Biomedical Informatics·Dennis ToddenrothThomas Ganslandt
May 17, 2019·JMIR MHealth and UHealth·Monique van BeukeringLinda Peute
Aug 8, 2020·Prevention Science : the Official Journal of the Society for Prevention Research·Dennis H LiBrian Mustanski
Oct 21, 2018·BMC Medical Informatics and Decision Making·Thibault LedieuMarc Cuggia
Sep 10, 2020·Sensors·Roberto ÁlvarezGerard Marrugat
Oct 23, 2020·BMJ Health & Care Informatics·Simon de LusignanRichard Hobbs
May 30, 2021·Journal of Echocardiography·David Roy AndersonAtif Qasim

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