Abstract:
This paper introduces a system-theoretic approach to improve inpatient discharge process at the University of Wisconsin (UW) Hospital. The complex hospital discharge proc...Show MoreMetadata
Abstract:
This paper introduces a system-theoretic approach to improve inpatient discharge process at the University of Wisconsin (UW) Hospital. The complex hospital discharge process is modeled by a stochastic process with parallel subprocesses, splits, merges, and reworks. Then, a stochastic analysis method is introduced to evaluate the performance of discharge. Specifically, the waiting and service times are characterized by gamma distributions, and an efficient algorithm is presented to aggregate the multiple interacting subprocesses and calculate the mean, variability, and discharge-time performance, i.e., the probability to discharge a patient within a desired or given time interval. High accuracy in performance evaluation is obtained by using such a method. To improve the discharge process at UW Hospital, bottleneck and what-if analyses are carried out and improvement recommendations are discussed.
Published in: IEEE Transactions on Automation Science and Engineering ( Volume: 16, Issue: 4, October 2019)
Funding Agency:

Department of Industrial Engineering, Tsinghua University, Beijing, China
Nan Chen received the B.S. degree from the Department of Industrial Engineering, Tsinghua University, Beijing, China, in 2014, where he is currently pursuing the Ph.D. degree.
His current research interests include stochastic modeling, analysis, and design of systems with primary focus on manufacturing and healthcare industry.
Nan Chen received the B.S. degree from the Department of Industrial Engineering, Tsinghua University, Beijing, China, in 2014, where he is currently pursuing the Ph.D. degree.
His current research interests include stochastic modeling, analysis, and design of systems with primary focus on manufacturing and healthcare industry.View more

Department of Industrial Engineering, Tsinghua University, Beijing, China
Xiaolei Xie (M’17) received the B.S. degree in mechanical engineering from the Beijing University of Aeronautics and Astronautics, Beijing, China, in 2008, the M.S.E. degree in industrial and operations engineering from the University of Michigan, Ann Arbor, MI, USA, in 2009, and the Ph.D. degree from the Department of Industrial and Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA, in 2014.
He is cur...Show More
Xiaolei Xie (M’17) received the B.S. degree in mechanical engineering from the Beijing University of Aeronautics and Astronautics, Beijing, China, in 2008, the M.S.E. degree in industrial and operations engineering from the University of Michigan, Ann Arbor, MI, USA, in 2009, and the Ph.D. degree from the Department of Industrial and Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA, in 2014.
He is cur...View more

Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
Zexian Zeng received the master’s degrees in industrial and systems engineering and computer science from the University of Wisconsin–Madison, Madison, WI, USA, in 2013, and the Ph.D. degree in biomedical informatics from Northwestern University, Chicago, IL, USA, in 2018.
He is currently a Post-Doctoral Fellow with the Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA. His research interests include st...Show More
Zexian Zeng received the master’s degrees in industrial and systems engineering and computer science from the University of Wisconsin–Madison, Madison, WI, USA, in 2013, and the Ph.D. degree in biomedical informatics from Northwestern University, Chicago, IL, USA, in 2018.
He is currently a Post-Doctoral Fellow with the Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA. His research interests include st...View more

Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA
Xiang Zhong (S’15–M’16) received the B.S. degree from the Department of Automation, Tsinghua University, Beijing, China, in 2011, and the M.S. degree in statistics and the Ph.D. degree in industrial engineering from the University of Wisconsin–Madison, Madison, WI, USA, in 2014 and 2016, respectively.
She is currently an Assistant Professor with the Department of Industrial and Systems Engineering, University of Florida, G...Show More
Xiang Zhong (S’15–M’16) received the B.S. degree from the Department of Automation, Tsinghua University, Beijing, China, in 2011, and the M.S. degree in statistics and the Ph.D. degree in industrial engineering from the University of Wisconsin–Madison, Madison, WI, USA, in 2014 and 2016, respectively.
She is currently an Assistant Professor with the Department of Industrial and Systems Engineering, University of Florida, G...View more

University of Wisconsin Hospital and Clinics, Madison, WI, USA
Maria Brenny-Fitzpatrick received the B.S.N. degree from the College of St. Teresa, Winona, MN, USA, in 1980, the M.S.N. from the University of Wisconsin–Oshkosh, Oshkosh, WI, USA, in 2005, and the Doctor of Nursing Practice degree, with a focus on systems leadership, from Rush University, Chicago, IL, USA, in 2015.
She was certified as a Family Nurse Practitioner and a Geriatric Nurse Practitioner. She is currently the Di...Show More
Maria Brenny-Fitzpatrick received the B.S.N. degree from the College of St. Teresa, Winona, MN, USA, in 1980, the M.S.N. from the University of Wisconsin–Oshkosh, Oshkosh, WI, USA, in 2005, and the Doctor of Nursing Practice degree, with a focus on systems leadership, from Rush University, Chicago, IL, USA, in 2015.
She was certified as a Family Nurse Practitioner and a Geriatric Nurse Practitioner. She is currently the Di...View more

University of Wisconsin Hospital and Clinics, Madison, WI, USA
Barbara A. Liegel received the B.S.N. degree from the University of Wisconsin–Eau Claire, Eau Claire, WI, USA, in 1977, and the M.S.N. degree from the University of Wisconsin–Madison, Madison, WI, USA, in 1988 (with advanced practice preparation as a Geriatric Nurse Practitioner).
She is currently the Administrative Director of the UW Health University Hospital and Clinics, Madison, WI, USA, for their skilled Home Care-HME...Show More
Barbara A. Liegel received the B.S.N. degree from the University of Wisconsin–Eau Claire, Eau Claire, WI, USA, in 1977, and the M.S.N. degree from the University of Wisconsin–Madison, Madison, WI, USA, in 1988 (with advanced practice preparation as a Geriatric Nurse Practitioner).
She is currently the Administrative Director of the UW Health University Hospital and Clinics, Madison, WI, USA, for their skilled Home Care-HME...View more

Department of Industrial and Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA
Li Zheng received the B.S. and Ph.D. degrees from Tsinghua University, Beijing, China, in 1986 and 1991, respectively.
From 1994 to 1996, he was a Visiting Professor with the Georgia Institute of Technology, Atlanta, GA, USA. He is currently a Professor with the Department of Industrial Engineering, Tsinghua University. He has authored or co-authored over 200 publications and five book chapters. His research interests incl...Show More
Li Zheng received the B.S. and Ph.D. degrees from Tsinghua University, Beijing, China, in 1986 and 1991, respectively.
From 1994 to 1996, he was a Visiting Professor with the Georgia Institute of Technology, Atlanta, GA, USA. He is currently a Professor with the Department of Industrial Engineering, Tsinghua University. He has authored or co-authored over 200 publications and five book chapters. His research interests incl...View more

Department of Industrial and Systems Engineering, University of Wisconsin, Madison, WI, USA
Jingshan Li (S’97–M’00–SM’06–F’17) received the B.S. degree from Tsinghua University, Beijing, China, in 1989, the M.S. degree in automation from the Chinese Academy of Sciences, Beijing, in 1992, and the Ph.D. degree in electrical engineering from the University of Michigan, Ann Arbor, MI, USA, in 2000.
He was with the General Motors Research and Development Center, Warren, MI, USA, from 2000 to 2006 and with the Universi...Show More
Jingshan Li (S’97–M’00–SM’06–F’17) received the B.S. degree from Tsinghua University, Beijing, China, in 1989, the M.S. degree in automation from the Chinese Academy of Sciences, Beijing, in 1992, and the Ph.D. degree in electrical engineering from the University of Michigan, Ann Arbor, MI, USA, in 2000.
He was with the General Motors Research and Development Center, Warren, MI, USA, from 2000 to 2006 and with the Universi...View more

Department of Industrial Engineering, Tsinghua University, Beijing, China
Nan Chen received the B.S. degree from the Department of Industrial Engineering, Tsinghua University, Beijing, China, in 2014, where he is currently pursuing the Ph.D. degree.
His current research interests include stochastic modeling, analysis, and design of systems with primary focus on manufacturing and healthcare industry.
Nan Chen received the B.S. degree from the Department of Industrial Engineering, Tsinghua University, Beijing, China, in 2014, where he is currently pursuing the Ph.D. degree.
His current research interests include stochastic modeling, analysis, and design of systems with primary focus on manufacturing and healthcare industry.View more

Department of Industrial Engineering, Tsinghua University, Beijing, China
Xiaolei Xie (M’17) received the B.S. degree in mechanical engineering from the Beijing University of Aeronautics and Astronautics, Beijing, China, in 2008, the M.S.E. degree in industrial and operations engineering from the University of Michigan, Ann Arbor, MI, USA, in 2009, and the Ph.D. degree from the Department of Industrial and Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA, in 2014.
He is currently an Associate Professor with the Department of Industrial Engineering, Tsinghua University, Beijing. His research interests are in stochastic modeling, optimization, and advanced data analytics in healthcare systems.
Dr. Xie is a member of the IEEE Robotics and Automation Society, the Institute for Operations Research and the Management Sciences, and the Institute of Industrial and Systems Engineers.
Xiaolei Xie (M’17) received the B.S. degree in mechanical engineering from the Beijing University of Aeronautics and Astronautics, Beijing, China, in 2008, the M.S.E. degree in industrial and operations engineering from the University of Michigan, Ann Arbor, MI, USA, in 2009, and the Ph.D. degree from the Department of Industrial and Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA, in 2014.
He is currently an Associate Professor with the Department of Industrial Engineering, Tsinghua University, Beijing. His research interests are in stochastic modeling, optimization, and advanced data analytics in healthcare systems.
Dr. Xie is a member of the IEEE Robotics and Automation Society, the Institute for Operations Research and the Management Sciences, and the Institute of Industrial and Systems Engineers.View more

Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
Zexian Zeng received the master’s degrees in industrial and systems engineering and computer science from the University of Wisconsin–Madison, Madison, WI, USA, in 2013, and the Ph.D. degree in biomedical informatics from Northwestern University, Chicago, IL, USA, in 2018.
He is currently a Post-Doctoral Fellow with the Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA. His research interests include stochastic modeling, machine learning, natural language processing, and computational genomics, with a focus on healthcare and biomedical applications.
Zexian Zeng received the master’s degrees in industrial and systems engineering and computer science from the University of Wisconsin–Madison, Madison, WI, USA, in 2013, and the Ph.D. degree in biomedical informatics from Northwestern University, Chicago, IL, USA, in 2018.
He is currently a Post-Doctoral Fellow with the Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA. His research interests include stochastic modeling, machine learning, natural language processing, and computational genomics, with a focus on healthcare and biomedical applications.View more

Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA
Xiang Zhong (S’15–M’16) received the B.S. degree from the Department of Automation, Tsinghua University, Beijing, China, in 2011, and the M.S. degree in statistics and the Ph.D. degree in industrial engineering from the University of Wisconsin–Madison, Madison, WI, USA, in 2014 and 2016, respectively.
She is currently an Assistant Professor with the Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA. Her research interests include stochastic modeling and control, and data analytics with the application in healthcare, service, and production systems.
Dr. Zhong is a member of Institute of Industrial and Systems Engineers and Institute for Operations Research and Management Sciences.
Xiang Zhong (S’15–M’16) received the B.S. degree from the Department of Automation, Tsinghua University, Beijing, China, in 2011, and the M.S. degree in statistics and the Ph.D. degree in industrial engineering from the University of Wisconsin–Madison, Madison, WI, USA, in 2014 and 2016, respectively.
She is currently an Assistant Professor with the Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA. Her research interests include stochastic modeling and control, and data analytics with the application in healthcare, service, and production systems.
Dr. Zhong is a member of Institute of Industrial and Systems Engineers and Institute for Operations Research and Management Sciences.View more

University of Wisconsin Hospital and Clinics, Madison, WI, USA
Maria Brenny-Fitzpatrick received the B.S.N. degree from the College of St. Teresa, Winona, MN, USA, in 1980, the M.S.N. from the University of Wisconsin–Oshkosh, Oshkosh, WI, USA, in 2005, and the Doctor of Nursing Practice degree, with a focus on systems leadership, from Rush University, Chicago, IL, USA, in 2015.
She was certified as a Family Nurse Practitioner and a Geriatric Nurse Practitioner. She is currently the Director of Transitions and Post-Acute Services with the University of Wisconsin Hospitals and Clinics, Madison, WI, USA. She is also a national speaker in Transitions of Care. She has co-authored multiple articles on the care of hospitalized geriatric patients and the dissemination of transitional care models for both medical and surgical patients.
Dr. Brenny-Fitzpatrick is a member of Wisconsin Nurses Association, American Nurses Association, and Gerontological Advanced Practice Nurses Association.
Maria Brenny-Fitzpatrick received the B.S.N. degree from the College of St. Teresa, Winona, MN, USA, in 1980, the M.S.N. from the University of Wisconsin–Oshkosh, Oshkosh, WI, USA, in 2005, and the Doctor of Nursing Practice degree, with a focus on systems leadership, from Rush University, Chicago, IL, USA, in 2015.
She was certified as a Family Nurse Practitioner and a Geriatric Nurse Practitioner. She is currently the Director of Transitions and Post-Acute Services with the University of Wisconsin Hospitals and Clinics, Madison, WI, USA. She is also a national speaker in Transitions of Care. She has co-authored multiple articles on the care of hospitalized geriatric patients and the dissemination of transitional care models for both medical and surgical patients.
Dr. Brenny-Fitzpatrick is a member of Wisconsin Nurses Association, American Nurses Association, and Gerontological Advanced Practice Nurses Association.View more

University of Wisconsin Hospital and Clinics, Madison, WI, USA
Barbara A. Liegel received the B.S.N. degree from the University of Wisconsin–Eau Claire, Eau Claire, WI, USA, in 1977, and the M.S.N. degree from the University of Wisconsin–Madison, Madison, WI, USA, in 1988 (with advanced practice preparation as a Geriatric Nurse Practitioner).
She is currently the Administrative Director of the UW Health University Hospital and Clinics, Madison, WI, USA, for their skilled Home Care-HME Program and Inpatient Coordinated Care Department which includes case management, social work, and spiritual care services. She has experience in community health nursing. She provides leadership for the UW Health Care Wear Boutique that provides mastectomy prosthetic fittings and specialty support stockings. She is also a Clinical Assistant Professor with the School of Nursing, University of Wisconsin. Her current knowledge and experience include capacity management, transition planning, case management, utilization management, Prospective Payment System reimbursement systems, compliance planning, home health regulations, and Joint Commission Deemed Status Accreditation.
Barbara A. Liegel received the B.S.N. degree from the University of Wisconsin–Eau Claire, Eau Claire, WI, USA, in 1977, and the M.S.N. degree from the University of Wisconsin–Madison, Madison, WI, USA, in 1988 (with advanced practice preparation as a Geriatric Nurse Practitioner).
She is currently the Administrative Director of the UW Health University Hospital and Clinics, Madison, WI, USA, for their skilled Home Care-HME Program and Inpatient Coordinated Care Department which includes case management, social work, and spiritual care services. She has experience in community health nursing. She provides leadership for the UW Health Care Wear Boutique that provides mastectomy prosthetic fittings and specialty support stockings. She is also a Clinical Assistant Professor with the School of Nursing, University of Wisconsin. Her current knowledge and experience include capacity management, transition planning, case management, utilization management, Prospective Payment System reimbursement systems, compliance planning, home health regulations, and Joint Commission Deemed Status Accreditation.View more

Department of Industrial and Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA
Li Zheng received the B.S. and Ph.D. degrees from Tsinghua University, Beijing, China, in 1986 and 1991, respectively.
From 1994 to 1996, he was a Visiting Professor with the Georgia Institute of Technology, Atlanta, GA, USA. He is currently a Professor with the Department of Industrial Engineering, Tsinghua University. He has authored or co-authored over 200 publications and five book chapters. His research interests include production system analysis and information-driven manufacturing.
Dr. Zheng received several important awards, such as the National Science and Technology Progress Award in 2005 and the National Invention Award in 1990.
Li Zheng received the B.S. and Ph.D. degrees from Tsinghua University, Beijing, China, in 1986 and 1991, respectively.
From 1994 to 1996, he was a Visiting Professor with the Georgia Institute of Technology, Atlanta, GA, USA. He is currently a Professor with the Department of Industrial Engineering, Tsinghua University. He has authored or co-authored over 200 publications and five book chapters. His research interests include production system analysis and information-driven manufacturing.
Dr. Zheng received several important awards, such as the National Science and Technology Progress Award in 2005 and the National Invention Award in 1990.View more

Department of Industrial and Systems Engineering, University of Wisconsin, Madison, WI, USA
Jingshan Li (S’97–M’00–SM’06–F’17) received the B.S. degree from Tsinghua University, Beijing, China, in 1989, the M.S. degree in automation from the Chinese Academy of Sciences, Beijing, in 1992, and the Ph.D. degree in electrical engineering from the University of Michigan, Ann Arbor, MI, USA, in 2000.
He was with the General Motors Research and Development Center, Warren, MI, USA, from 2000 to 2006 and with the University of Kentucky, Lexington, KY, USA, from 2006 to 2010. He is currently a Professor with the Department of Industrial and Systems Engineering and the Associate Director of the Wisconsin Institute of Healthcare Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA. His research has been supported by National Science Foundation (NSF), Department of Energy, National Institute of Standards and Technology, Patient-Centered Outcomes Research Institute, Agency for Healthcare Research and Quality, manufacturing companies, and healthcare organizations. He has co-authored the book Production Systems Engineering (Springer, Chinese Edition by BIT Press, 2012) and co-edited seven book volumes. He has published more than 100 refereed journal articles, 15 book chapters, and 120 peer-reviewed conference proceedings. His primary research interests are in the design, analysis, improvement, and control of production and healthcare delivery systems.
Dr. Li received the NSF CAREER Award from 2010 to 2016, the IEEE Robotics and Automation Early Career Award in 2006, and multiple best paper awards from the IIE Transactions, the IEEE Transactions, and many flagship international conferences. He was the General Co-Chair and the Program Co-Chair of the 2013 and 2015 IEEE International Conference on Automation Science and Engineering (CASE), respectively, where he is also the Program Chair. He was the Founding Chair of the IEEE Technical Committee on Sustainable Production Automation from 2012 to 2016. He has been the Chair of the Technical Committee on Automation for Healthcare Management since 2016. He is a Senior Editor of the IEEE Transactions on Automation Science and Engineering and the IEEE Robotics and Automation Letters, the Department Editor of the Institute of Industrial and Systems Engineers Transactions, an Area Editor of the Flexible Service and Manufacturing Journal, and an Associate Editor of the International Journal of Production Research and the International Journal of Automation Technology. He is also an IEEE Distinguished Lecturer in robotics and automation.
Jingshan Li (S’97–M’00–SM’06–F’17) received the B.S. degree from Tsinghua University, Beijing, China, in 1989, the M.S. degree in automation from the Chinese Academy of Sciences, Beijing, in 1992, and the Ph.D. degree in electrical engineering from the University of Michigan, Ann Arbor, MI, USA, in 2000.
He was with the General Motors Research and Development Center, Warren, MI, USA, from 2000 to 2006 and with the University of Kentucky, Lexington, KY, USA, from 2006 to 2010. He is currently a Professor with the Department of Industrial and Systems Engineering and the Associate Director of the Wisconsin Institute of Healthcare Systems Engineering, University of Wisconsin–Madison, Madison, WI, USA. His research has been supported by National Science Foundation (NSF), Department of Energy, National Institute of Standards and Technology, Patient-Centered Outcomes Research Institute, Agency for Healthcare Research and Quality, manufacturing companies, and healthcare organizations. He has co-authored the book Production Systems Engineering (Springer, Chinese Edition by BIT Press, 2012) and co-edited seven book volumes. He has published more than 100 refereed journal articles, 15 book chapters, and 120 peer-reviewed conference proceedings. His primary research interests are in the design, analysis, improvement, and control of production and healthcare delivery systems.
Dr. Li received the NSF CAREER Award from 2010 to 2016, the IEEE Robotics and Automation Early Career Award in 2006, and multiple best paper awards from the IIE Transactions, the IEEE Transactions, and many flagship international conferences. He was the General Co-Chair and the Program Co-Chair of the 2013 and 2015 IEEE International Conference on Automation Science and Engineering (CASE), respectively, where he is also the Program Chair. He was the Founding Chair of the IEEE Technical Committee on Sustainable Production Automation from 2012 to 2016. He has been the Chair of the Technical Committee on Automation for Healthcare Management since 2016. He is a Senior Editor of the IEEE Transactions on Automation Science and Engineering and the IEEE Robotics and Automation Letters, the Department Editor of the Institute of Industrial and Systems Engineers Transactions, an Area Editor of the Flexible Service and Manufacturing Journal, and an Associate Editor of the International Journal of Production Research and the International Journal of Automation Technology. He is also an IEEE Distinguished Lecturer in robotics and automation.View more