Title
Combining situated Cognitive Engineering with a novel testing method in a case study comparing two infusion pump interfaces
Author
Schnittker, R.
Schmettow, M.
Verhoeven, F.
Schraagen, J.M.C.
Publication year
2016
Abstract
We validated the usability of a new infusion pump interface designed with a situated Cognitive Engineering approach by comparing it to a reference interface using a novel testing method employing repeated measurements and process measures, in addition to traditional outcome measures. The sample consisted of 25 nurses who performed eight critical tasks three times. Performance measures consisted of number and type of errors, deviations from a pre-established normative path solution, task completion times, number of keystrokes, mental effort and preferences in use. Results showed that interaction with the new interface resulted in 18% fewer errors, 90% fewer normative path deviations, 42% lower task completion times, 40% fewer keystrokes, 39% lower mental effort and 76% more subjective preferences in use. These outcomes suggest that within the scope of this case study, combining the situated Cognitive Engineering approach with a novel testing method addresses various shortcomings of earlier testing methods. © 2016 Elsevier Ltd and The Ergonomics Society. All rights reserved.
Subject
Human & Operational Modelling
HOI - Human Behaviour & Organisational Innovations
ELSS - Earth, Life and Social Sciences
Psychology
Human-machine interaction
Infusion pump
Medical device usability testing
To reference this document use:
http://resolver.tudelft.nl/uuid:fef94da5-0d2a-478e-a484-3d9dea7a36be
DOI
https://doi.org/10.1016/j.apergo.2016.01.004
TNO identifier
536218
Source
Applied Ergonomics, 55, 16-26
Document type
article