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A Smart and Minimally Intrusive Monitoring Framework Design for Health Assessment of the Elderly

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A Smart and Minimally Intrusive Monitoring Framework Design for Health Assessment of the Elderly A Smart and Minimum-intrusive Monitoring Framework Design for Health Assessment of the Elderly A dissertation submitted to the Graduate School of the University of Cincinnati in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Mechanical Engineering of the College of Engineering and Applied Science By Chuan Jiang M.S. University of Cincinnati (2012) Doctoral Committee: Dr. Samuel Huang (Chair) Dr. Jay Kim Dr. David Thompson Dr. Gregg Warshaw Dr. Evelyn Fitzwater April 2015 Abstract The continuously increasing trend of world aging has spurred the development of healthcare services and facilities for the elderly population. A variety of daily activity and behavior monitoring systems are built to promote independent living wellbeing and provide tremendous cost benefits for the elderly. However, it has been observed that none of these efforts uses a well-defined behavioral model as theoretical basis for healthcare monitoring of the elderly. The existing behavioral models haven’t been demonstrated to be highly related to the health status of the elderly. These problems obstructed a lot for achieving convincible results in the healthcare monitoring applications. To deal with this issue, the proposed research designs a systematic framework of an intelligent, minimum-intrusive, and low-cost sensing system for monitoring behaviors of the elderly and measuring or assessing their health status. A multi-dimensional behavioral model is developed based on instruments used in functional healthcare of the elderly. Based on this behavioral model, a high-level conceptual schema is illustrated to show how sensors are mapped to behavioral items that can be measured using sensors. A practical data acquisition strategy is established and sensors are selected to collect data for room occupancy, appliance usage and activity tracking. The collected data are analyzed and some features have been extracted to characterize the daily behavioral patterns of the monitored subject. A preliminary work plan for behavioral deviation detection and psychometric property testing is proposed. Also, methods and tools are selected to visualize and integrate the health index of each dimension of behavioral model of the elderly. ii This research provides a guideline for developing data-driven based health assessment instrumentation in healthcare monitoring applications for the elderly. Ultimately, the proposed system would be useful to improve elders’ quality of life, lower their healthcare cost, and reduce the reliance on caregivers. iii iv Acknowledgements I would like to express my sincere respect and gratitude to my advisor, Dr. Samuel Huang, for his visionary guidance and persistent support through my doctoral study at the University of Cincinnati. The help and encouragement of Dr. Huang inspired me a lot to gain experience in research and made me grow up as a more mature person in life. I am also grateful to Dr. Jay Kim, Dr. David Thompson, Dr. Gregg Warshaw and Dr. Evelyn Fitzwater for serving on my doctoral committee. I am also thankful to Dr. Nuo Xu, Dr. Dengyao Mo, Dr. Rongsheng Gong, Dr. Hua Li, Mr. Yi Zhang, Mr. Weizeng Ni, Mr. Kailun Yuan, Mr. Suryanarayana Yaddanapudi, Mr. Vishnu Madhvarayan and many others for their help during my doctoral study. Lastly, I would like to express sincere appreciation to my parents for their constant consideration and support over the years. v Table of Contents Abstract……………………………………………………………………………………………ii Acknowledgements………………………………….…………………………………………….v Table of Contents….……………………………………………………………………………vi List of Figures…….……………………………………………….……………………………viii List of Tables…………………………………………………….…………………..……………x 1. Introduction…………………..…………………………………………………………………1 1.1. Introduction…………………..……………………………………..………………………1 1.2. Motivation…………………..……………………………………..………………..………2 1.3. Research Objectives………..……………………………………..………………..….……3 1.4. Dissertation Organization…..……………………………………..………………..….……5 2. Issues and State-of-art on Healthcare Monitoring for the Elderly…..…………………….……6 2.1. Patent Search on Healthcare Monitoring Systems of the Elderly…..………………....……6 2.2. Literature Review on Healthcare Monitoring of the Elderly…..………………..…....……11 2.2.1. Sensors………..……………………………………..………………………...….……12 2.2.2. Behavior Modeling………………………………..………………………...…....……14 2.2.3. Behavior Data Analysis………………………………..………….………...…....……18 2.3. Summary………………………………..………….………...…....…………………….…21 3. Development of Behavioral Model of the Elderly and Integrated Design of the Smart and Minimum-intrusive Monitoring System……..………….………...…....………………….…26 3.1. Concepts and Issues in Health Measurement of the Elderly…...…....………………….…26 3.1.1. Health Domains of Elderly and Commonly Used Assessment Scales…...…....………26 3.1.2. Psychometric Properties of Health Measurement Scales…………….…...…....………30 3.1.2.1. Reliability……..………….………...…....……………………………...……….…30 3.1.2.2. Validity……..………….………...…....……………………………...………….…31 3.1.2.3. Responsiveness……….………...…....……………………………...……..…….…34 3.2. Measurement Scales Used in Functional Healthcare and Behavioral Model of the Elderly……….………...…....………………………………………...………...……..…….…35 3.2.1. Measurement Scales Used in Functional Healthcare of the Elderly…...……..……..…35 3.2.2. Behavioral Model of the Elderly……………………………...………...……..…….…38 vi 3.3. Smart Apartment Overview and Sensor Selection for the Smart and Minimum-intrusive Monitoring System……………………………...………...……..…………………………..…41 3.3.1. Smart Apartment Overview…………...………...……..…..………………………..…41 3.3.2. Sensor Selection…………...………...……..…..……………………………..……..…43 3.4. Summary…………...………...……..…..……………………………..…………….…..…51 4. Data Analytics for the Multi-dimensional Behavioral Model of the Elderly…………..…..…54 4.1. Room Occupancy Monitoring……..…..……………………………..……………..…..…54 4.2. Appliance Usage Monitoring……..…..……………………………..……………..…...…61 4.3. Activity Tracking……..…..……………………………..……………………….....…...…71 4.4. Summary……..…..……………………………..………………………….…….....…...…75 5. Conclusions……..…..……………………………..………………………….……......…...…83 Reference……..…..………………………………..………..……………………...…….…...…85 Appendix……..…..………………………………..………..……………………...…….…...…94 Publications……..…..………………………………..………..……...…………...…….…...…113 vii List of Figures Figure 1: Unidirectional sensor-based health monitoring system architecture……………...…….8 Figure 2: Bidirectional caregiver-based health communication system…………………….…….9 Figure 3: Overview of the smart and minimum-intrusive monitoring framework for health assessment of the elderly………………………………………...………………...…………….23 Figure 4: Floor plan of maple knoll apartment………….………………………...……….…….42 Figure 5: Conceptual schema for sensor mapping…………………………………………..….44 Figure 6: The Monnit Wi-Fi motion sensor……………………..………………...…….……….46 Figure 7: Innovative energy monitor: Smappee…………………………………………….….47 Figure 8: Fitbit Force tracker………..………………………………………………….…….….49 Figure 9: Synchronized data visualization of Fitbit Force tracker………..…………….…….….49 Figure 10: Sensor installation in maple knoll apartment……………………...…………………51 Figure 11: Procedure of designing the smart and minimum-intrusive monitoring framework...53 Figure 12: iMonnit online wireless sensors portal………………………………………………55 Figure 13: Room occupancy data…...……………………………………………...……………55 Figure 14: Room occupancy data visualization when subject is alone at home.……………57 Figure 15: Room occupancy data visualization when caregiver comes…………………………58 Figure 16: Room occupancy data visualization when subject is absent……………………...….58 Figure 17: Room occupancy features in January………………………………………………...60 Figure 18: Smappee event list of appliance usage………….…………….………...……………62 Figure 19: Appliance usage data visualization when caregiver comes….…………….…………64 Figure 20: Appliance usage data visualization when subject is alone at home………………….64 Figure 21: Appliance usage data visualization when subject is absent………………………….65 Figure 22: Usage pattern of refrigerator…………………………………………………………66 Figure 23: Usage pattern of iron……………..…………………………………..………………67 Figure 24: Usage pattern of washing machine……………………………..………….…………67 Figure 25: Usage pattern of stove………………………………….…………………………….68 Figure 26: Usage pattern of toaster…………………….…………..…………………………….68 Figure 27: Usage pattern of microwave…………………………………………………...……..69 Figure 28: Power consumption data from 01/18/2015 to 01/25/2015………………………...…70 viii Figure 29: Fitbit step, distance, and stair data……………………………………..……...……..73 Figure 30: Fitbit total calorie and activity calorie data………………………………..................74 Figure 31: Fitbit minutes data for different active levels……………………………………….74 Figure 32: Data comparison between normal behavior and recent behavior…………………….76 Figure 33: Behavioral model dimension conversion using factor analysis…………...…………80 Figure 34: Health indices visualization for multi-dimensional behavioral model of the elderly..81 Figure 35: Trend of health status indicator……………………………………...……………….82 ix List of Tables Table 1: Selected patents for review…………………..………………………………………....6 Table 2: Keywords used for Scopus, WOS, and PubMed………………………………....………11 Table 3: Sensor categorization and common examples…………………...……………………..12 Table 4: Behavior modeling methods summary……………………………………………….15 Table 5: Data analysis methods summary..............................................................................…...18 Table 6: Measurement scales used in functional healthcare of the elderly…………………........35 Table 7: Content of the measurement scales used in functional healthcare
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