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Biomedical subjects

Andre W Kushniruk

Publications and source records attributed to Andre W Kushniruk.

6 recordsLinked to original sources
PubMed2006

Low-cost rapid usability engineering: designing and customizing usable healthcare information systems.

It is essential that the healthcare systems we develop are usable, meet user information needs and are safe. To ensure system usability, a variety of methods have emerged from the area of usability engineering and have been adapted to healthcare. The authors have been applying methods of usability engineering, working with hospitals and companies to develop more usable healthcare information systems for over 15 years. Based on our current work at the University of Victoria, we describe how to set up a low-cost portable laboratory that can rapidly evaluate the usability and safety of healthcare information systems both in artificial mocked-up settings and in real clinical contexts (e.g., in hospital wards).

Computer Peripherals↗
PubMed2005

Technology induced error and usability: the relationship between usability problems and prescription errors when using a handheld application.

This paper describes an innovative approach to the evaluation of a handheld prescription writing application. Participants (10 physicians) were asked to perform a series of tasks involving entering prescriptions into the application from a medication list. The study procedure involved the collection of data consisting of transcripts of the subjects who were asked to "think aloud" while interacting with the prescription writing program to enter medications. All user interactions with the device were video and audio recorded. Analysis of the protocols was conducted in two phases: (1) usability problems were identified from coding of the transcripts and video data, (2) actual errors in entering prescription data were also identified. The results indicated that there were a variety of usability problems, with most related to interface design issues. In examining the relationship between usability problems and errors, it was found that certain types of usability problems were closely associated with the occurrence of specific types of errors in prescription of medications. Implications for identifying and predicting technology-induced error are discussed in the context of improving the safety of health care information systems.

Adult↗
PubMed2004

Cognitive and usability engineering methods for the evaluation of clinical information systems.

Increasingly healthcare policy and decision makers are demanding evidence to justify investments in health information systems. This demand requires an adequate evaluation of these systems. A wide variety of approaches and methodologies have been applied in assessing the impact of information systems in health care, ranging from controlled clinical trials to use of questionnaires and interviews with users. In this paper we describe methodological approaches which we have applied and refined for the past 10 years for the evaluation of health information systems. The approaches are strongly rooted in theories and methods from cognitive science and the emerging field of usability engineering. The focus is on assessing human computer interaction and in particular, the usability of computer systems in both laboratory and naturalistic settings. The methods described can be a part of the formative evaluation of systems during their iterative development, and can also complement more traditional assessment methods used in summative system evaluation of completed systems. The paper provides a review of the general area of systems evaluation with the motivation and rationale for methodological approaches underlying usability engineering and cognitive task analysis as applied to health information systems. This is followed by a detailed description of the methods we have applied in a variety of settings in conducting usability testing and usability inspection of systems such as computer-based patient records. Emerging trends in the evaluation of complex information systems are discussed.

Biomedical Engineering↗
PubMed2002

The patient clinical information system (PatCIS): technical solutions for and experience with giving patients access to their electronic medical records.

As health records evolve into electronic form, increasing demand is being made to provide patients with access to them. We sought to study the character and impact of such access to determine how patients use such records, what cognitive effects it has on them, and how it affects their relationship with their health care providers. We created the Patient Clinical Information System (PatCIS) to interface with the clinical data repository at New York Presbyterian Hospital (NYPH) to allow patients to add to and review their medical data. We also provided educational resources and automated advice programs. We provided access to the system to thirteen subjects over a 36-month period and reviewed their activities in the system's usage log. We also collected data via questionnaire and telephone interview. We collected data for a total of 223 patient months. We found that patients varied in their use of the system, from once a month or less to one or more times per day. All patients primarily used the system to review laboratory results. Both they and their physicians believed that use of the system enhanced the patients' understanding of their conditions and improved their communication with their physicians. There were no adverse events encountered during the study.

Adult↗
PubMed2002

Usability evaluation of an experimental text summarization system and three search engines: implications for the reengineering of health care interfaces.

This paper describes the comparative evaluation of an experimental automated text summarization system, Centrifuser and three conventional search engines - Google, Yahoo and About.com. Centrifuser provides information to patients and families relevant to their questions about specific health conditions. It then produces a multidocument summary of articles retrieved by a standard search engine, tailored to the user's question. Subjects, consisting of friends or family of hospitalized patients, were asked to "think aloud" as they interacted with the four systems. The evaluation involved audio- and video recording of subject interactions with the interfaces in situ at a hospital. Results of the evaluation show that subjects found Centrifuser's summarization capability useful and easy to understand. In comparing Centrifuser to the three search engines, subjects' ratings varied; however, specific interface features were deemed useful across interfaces. We conclude with a discussion of the implications for engineering Web-based retrieval systems.

Angina Pectoris↗