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The HFE conceptual frameworks that guided this study. (a) SEIPS 2.0 model depicting the sociotechnical work system, performance processes, and outcomes with adaptation and feedback mechanism. (b) Different lenses for designing consumer health IT, with the broadest being the patient work lens. (c) Three broad, iterative phases of user-centered design and example activities in each. (Image used with permission from Richard J. Holden, myows.com license #97820.)
