Browsing by Author "Kaufman, David R"
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- ItemA cognitive framework for understanding barriers to the productive use of a diabetes home telemedicine system.(2004-01-19) Kaufman, David R; Starren, Justin; Patel, Vimla L; Morin, Philip C; Hilliman, Charlyn; Pevzner, Jenia; Weinstock, Ruth S; Goland, Robin; Shea, StevenTelemedicine has the potential to transcend geographic and socio cultural barriers to the delivery of high quality health care to the medically underserved populations However there are significant cognitive and usability barriers This paper presents a multifaceted cognitive evaluation of the IDEATel diabetes education and telemedicine program The evaluation included a cognitive walkthrough analysis to characterize task complexity and identify potential problems as well as field usability testing in patients homes The study revealed dimensions of the interface that impeded optimal access to system resources In addition we found significant obstacles corresponding to perceptual motoric skills mental models of the system and health literacy The objective of this work is to contribute to a design framework so that participants with a wide range of skills can better manage their chronic illnesses
- ItemA methodological framework for evaluating mobile health devices.(2007-01-22) Kaufman, David R; Starren, Justin BMobile devices such as PDAs are increasingly used as a part of healthcare interventions Although they can provide powerful communication and self management tools for patients with chronic illness relatively little is known about their usability A methodological framework for evaluating mobile health devices is proposed It adapts the well known methodologies of cognitive task analysis and usability testing The framework is illustrated in the context of an analysis of an advanced function glucose meter The analyses documented a range of problems which highlights the need to carefully scrutinize the usability of mobile health devices
- ItemMobile phones as mediators of health behavior change in cardiovascular disease in developing countries.(2009-04-21) Chan, Connie V; Kaufman, David RThe global burden of cardiovascular diseases CVD is becoming a growing problem in developing countries Successful self management of CVD is dependent on a multitude of factors including social support communication with health care providers careful monitoring and other determinants The growing market penetration and the communication properties of mobile phones create opportunities for innovation in promoting CVD self management through support of lifestyle and behavior modification Mobile phones support various modes of communication and interaction have fewer adoption barriers and are more prevalent than other available technologies in developing countries However mobile phone interventions are not without many challenges such as mobile infrastructure electric infrastructure access to mobile devices and appropriate user interfaces for interaction In this paper we discuss current evidence as well as research opportunities to explore the role of mobile phones in supporting behavior modification in developing countries
- ItemThe REmote Patient Education in a Telemedicine Environment Architecture (REPETE).(2008-06-23) Lai, Albert M; Starren, Justin B; Kaufman, David R; Mendonca, Eneida A; Palmas, Walter; Nieh, Jason; Shea, StevenThe objective of the study was to develop and implement an architecture for remote training that can be used in the narrowband home telemedicine environment A remote training architecture the REmote Patient Education in a Telemedicine Environment REPETE architecture using a remote control protocol RCP was developed A set of design criteria was specified The developed architecture was integrated into the IDEATel home telemedicine unit HTU and evaluated against these design criteria using a combination of technical and expert evaluations Technical evaluation of the architecture demonstrated that remote cursor movements and positioning displayed on the HTU were smooth and effectively real time The trainers were able to observe within approximately 2 seconds lag what the patient sees on their HTU screen Evaluation of the architecture by experts was favorable Responses to a Likert scale questionnaire regarding audio quality and remote control performance indicated that the expert evaluators thought that the audio quality and remote control performance were adequate for remote training All evaluators strongly agreed that the system would be useful for training patients The REPETE architecture supports basic training needs over a narrowband dial up connection We were able to maintain an audio chat simultaneously with performing a remote training session while maintaining both acceptable audio quality and remote control performance The RCP provides a mechanism to provide training without requiring a trainer to go to the patient s home and effectively supports deictic referencing to on screen objects
- ItemSupporting cancer patients in illness management: usability evaluation of a mobile app.(2014-08-14) Mirkovic, Jelena; Kaufman, David R; Ruland, Cornelia MBACKGROUND Mobile phones and tablets currently represent a significant presence in people s everyday lives They enable access to different information and services independent of current place and time Such widespread connectivity offers significant potential in different app areas including health care OBJECTIVE Our goal was to evaluate the usability of the Connect Mobile app The mobile app enables mobile access to the Connect system an online system that supports cancer patients in managing health related issues Along with symptom management the system promotes better patient provider communication collaboration and shared decision making The Connect Mobile app enables access to the Connect system over both mobile phones and tablets METHODS The study consisted of usability tests of a high fidelity prototype with 7 cancer patients where the objectives were to identify existing design and functionality issues and to provide patients with a real look and feel of the mobile system In addition we conducted semistructured interviews to obtain participants feedback about app usefulness identify the need for new system features and design requirements and measure the acceptance of the mobile app and its features within everyday health management RESULTS The study revealed a total of 27 design issues 13 for mobile apps and 14 for tablet apps which were mapped to source events ie errors requests for help participants concurrent feedback and moderator observation We also applied usability heuristics to identify violations of usability principles The majority of violations were related to enabling ease of input screen readability and glanceability 15 issues as well as supporting an appropriate match between systems and the real world 7 issues and consistent mapping of system functions and interactions 4 issues Feedback from participants also showed the cancer patients requirements for support systems and how these needs are influenced by different context related factors such as type of access terminal eg desktop computer tablet mobile phone and phases of illness Based on the observed results we proposed design and functionality recommendations that can be used for the development of mobile apps for cancer patients to support their health management process CONCLUSIONS Understanding and addressing users requirements is one of the main prerequisites for developing useful and effective technology based health interventions The results of this study outline different user requirements related to the design of the mobile patient support app for cancer patients The results will be used in the iterative development of the Connect Mobile app and can also inform other developers and researchers in development integration and evaluation of mobile health apps and services that support cancer patients in managing their health related issues
- ItemA technology selection framework for supporting delivery of patient-oriented health interventions in developing countries.(2010-03-15) Chan, Connie V; Kaufman, David RHealth information technologies HIT have great potential to advance health care globally In particular HIT can provide innovative approaches and methodologies to overcome the range of access and resource barriers specific to developing countries However there is a paucity of models and empirical evidence informing the technology selection process in these settings We propose a framework for selecting patient oriented technologies in developing countries The selection guidance process is structured by a set of filters that impose particular constraints and serve to narrow the space of possible decisions The framework consists of three levels of factors 1 situational factors 2 the technology and its relationship with health interventions and with target patients and 3 empirical evidence We demonstrate the utility of the framework in the context of mobile phones for behavioral health interventions to reduce risk factors for cardiovascular disease This framework can be applied to health interventions across health domains to explore how and whether available technologies can support delivery of the associated types of interventions and with the target populations
- ItemTraining digital divide seniors to use a telehealth system: a remote training approach.(2007-01-22) Lai, Albert M; Kaufman, David R; Starren, JustinAs the use of health information technologies continues to proliferate amongst seniors many of whom lack computer experience there is a need to develop effective training approaches to foster basic competencies This paper describes the REmote Patient Education in a Telemedicine Environment REPETE system a component of the IDEATel telemedicine architecture The REPETE architecture supports simultaneous visual and audio teaching modes over low bandwidth connections This paper presents an in depth qualitative analysis of two patients being trained to use the IDEATel patient web portal The results indicate that this method of instruction was useful in facilitating patients use of the web application However the observations suggest that there is learning curve for the trainer to use the resources effectively to establish common ground and foster competencies in the patient
- ItemUsability in the real world: assessing medical information technologies in patients' homes.(2003-10-13) Kaufman, David R; Patel, Vimla L; Hilliman, Charlyn; Morin, Philip C; Pevzner, Jenia; Weinstock, Ruth S; Goland, Robin; Shea, Steven; Starren, JustinThis paper presents an approach to usability evaluation of computer based health care systems designed for patient use in their homes Although such devices are becoming more prevalent there is very little known about their usability