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Usability testing of a prototype Phone Oximeter with healthcare providers in high‐ and low‐medical resource environments *
Author(s) -
Hudson J.,
Nguku S. M.,
Sleiman J.,
Karlen W.,
Dumont G. A.,
Petersen C. L.,
Warriner C. B.,
Ansermino J. M.
Publication year - 2012
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.2012.07196.x
Subject(s) - usability , medicine , mobile phone , phone , human–computer interaction , mhealth , usability lab , multimedia , computer science , usability engineering , nursing , telecommunications , psychological intervention , philosophy , linguistics
Summary To increase the use of pulse oximetry by capitalise on the wide availability of mobile phones, we have designed, developed and evaluated a prototype pulse oximeter interfaced to a mobile phone. Usability of this Phone Oximeter was tested as part of a rapid prototyping process. Phase 1 of the study (20 subjects) was performed in Canada. Users performed 23 tasks, while thinking aloud. Time for completion of tasks and analysis of user response to a mobile phone usability questionnaire were used to evaluate usability. Five interface improvements were made to the prototype before evaluation in Phase 2 (15 subjects) in Uganda. The lack of previous pulse oximetry experience and mobile phone use increased median (IQR [range]) time taken to perform tasks from 219 (160–247 [118–274]) s in Phase 1 to 228 (151–501 [111–2661]) s in Phase 2. User feedback was positive and overall usability high (Phase 1 – 82%, Phase 2 – 78%).