BMI 211 02.04.10

BMI 211 02.04.10 - Effective Design in Clinical Informatics...

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Effective Design in Clinical Informatics BMI 211/CS 271 Amar Das Assistant Professor Medicine (Biomedical Informatics)
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What is Successful Design? Technical Model User Model System Interface
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User Centered Design
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QuickTimeÔ and a TIFF (Uncompressed) decompressor are needed to see this picture.
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Why do we hate this thing? It’s cute It’s anthropomorphic It provides direct access to Office help functions It’s usually wrong about what we’re trying to do QuickTimem and a TIFF (LZW) decompressor are needed to see this picture.
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There’s not that much fondness here, either
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The medical informatics literature focuses on Physicians who don’t like typing Physicians who resist changing their existing work patterns Physicians who won’t accommodate to the computer
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A Cognitive Perspective Users are cognitive creatures Attention, perception, comprehension, judgment and decision making Cognitive limitations exist Knowledge, biases, cognitive overload Cognitive resources support users’ work
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Cognitive Engineering Focuses on principles behind human cognition that are relevant to system design The goal is to devise systems that reduce the cognitive effort of undertaking tasks
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A Usability Perspective Usability is “broadly defined as the capacity of a system to allow users to carry out their tasks safely, effectively, efficiently, and enjoyably” Kushniruk and Patel, 2003
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Usability Engineering The design process that ensures a product with good usability The challenge is to define and measure usability
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The Work of Jacob Nielsen
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Usability Engineering Model Consider the larger context Know the user Competitive analysis Setting usability goals Participatory design Coordinated design of the total interface Guidelines and heuristic analysis Prototyping Empirical testing Iterative design Collect feedback from the field use
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Setting usability goals Learnability Efficiency of use Ability of infrequent users to return to the system Frequency and seriousness of user errors Subjective user satisfaction
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Use simple and natural dialogue Speak the user’s language Minimize user memory load Be consistent Provide feedback
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This note was uploaded on 05/26/2010 for the course CS 271 taught by Professor Das during the Winter '10 term at Stanford.

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BMI 211 02.04.10 - Effective Design in Clinical Informatics...

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