Journal of Industrial and Management Optimization (JIMO)

Minimization of the coefficient of variation for patient waiting system governed by a generic maximum waiting policy
Pages: 1759 - 1770, Issue 4, October 2017

doi:10.3934/jimo.2017017      Abstract        References        Full text (368.5K)           Related Articles

Fanwen Meng - Department of Health Services and Outcomes Research, National Healthcare Group, 138543, Singapore (email)
Kiok Liang Teow - Department of Health Services and Outcomes Research, National Healthcare Group, 138543, Singapore (email)
Chee Kheong Ooi - Department of Emergency Medicine, Tan Tock Seng Hospital, 308433, Singapore (email)
Bee Hoon Heng - Department of Health Services and Outcomes Research, National Healthcare Group, 138543, Singapore (email)
Seow Yian Tay - Department of Emergency Medicine, Tan Tock Seng Hospital, 308433, Singapore (email)

1 Australian Institute of Health and Welfare (AIHW), Australian Hospital Statistics 2003.04. (Canberra: AIHW, 2005) (AIHW cat. no. HSE 37; Health Services series no. 23).
2 B. Bursch, J. Beezy and R. Shaw, Emergency department satisfaction: What matters most?, Ann. Emerg. Med., 22 (1993), 586-591.
3 L. G. Connelly and A. E. Bair, Discrete event simulation of emergency department activity: A platform for system-level operations research, Acad. Emerg. Med., 11 (2004), 1177-1185.
4 B. L. Conner-Spady, C. Sanmartin, G. H. Johnston, J. J. McGurran, M. Kehler and T. W. Noseworthy, The importance of patient expectations as a determinant of satisfaction with waiting times for hip and knee replacement surgery, Health Policy, 101 (2011), 245-252.
5 P. De, J. B. Ghosh and C. E. Wells, Scheduling to minimize the coefficient of variation, Int. J. Prod. Econ., 44 (1996), 249-253.
6 R. L. Gardner, U. Sarkar and J. H. Maselli et al., Factors associated with longer ED lengths of stay, Am. J. Emerg. Med., 25 (2007), 643-650.
7 L. V. Green and S. Savin, Reducing delays for medical appointments: A queueing approach, Oper. Res., 56 (2008), 1526-1538.       
8 A. Guttmann, M. J. Schull, M . J. Vermeulen and T. A. Stukel, Association between waiting times and short term mortality and hospital admission after departure from emergency department: Population based cohort study from Ontario, Canada, BMJ, 342 (2011).
9 P. R. Harper and H. M. Gamlin, Reduced outpatient waiting times with improved appointment scheduling: A simulation modelling approach, OR Spectrum, 25 (2003), 207-222.
10 S. A. Hemaya and T. E. Locke, How accurate are predicted waiting times, determined upon a patient's arrival in the Emergency Department?, Emerg. Med. J., 29 (2012), 316-318.
11 E. T. Ho, Improving waiting time and operational clinic flow in a tertiary diabetes center, BMJ Qual. Improv. Rep., 2 (2014).
12 M. A. Kallen, J. A. Terrell, P. Lewis-Patterson and J. P. Hwang, Improving wait time for chemotherapy in an outpatient clinic at a comprehensive cancer center, J. Oncol. Practice, 8 (2012), e1-e7.
13 K. Kelly, Sample size planning for the coefficient of variation from the accuracy in parameter estimation approach, Behav. Res. Methods, 39 (2007), 755-766.
14 D. Kozlowski and D. Worthington, Use of queue modelling in the analysis of elective patient treatment governed by a maximum waiting time policy, European Journal of Operational Research, 244 (2015), 331-338.
15 J. Librero, M. Marin, S. Peiro and A. V. Munujos, Exploring the impact of complications on length of stay in major surgery diagnosis-related groups, Int. J. Qual. Health Care, 16 (2004), 51-57.
16 F. Meng, K. L. Teow, C. K. Ooi, B. H. Heng and S. Y. Tay, Analysis of patient waiting time governed by a generic maximum waiting time policy with general phase-type approximations, Health Care Manag. Sci., 18 (2015), 267-278.
17 F. Meng, J. Qi, M. Zhang, J. Ang, S. Chu and M. Sim, A robust optimization model for managing elective admision in a public hospital, Oper. Res., 63 (2015), 1452-1467.       
18 MOH (Ministry of Health) Singapore, 2012. Available from: http://www.moh.gov.sg/content/moh_web/home/statistics/healthcare_institutionstatistics/Waiting_Time_for_Admission_to_Ward.html.
19 Ministry of Health, MOH Statistics Bulletin, Singapore, 2009.
20 J. C. Mowen, J. W. Licata and J. McPhail, Waiting in the emergency room: how to improve patient satisfaction, J. Health Care Mark., 13 (1993), 26-33.
21 H. C. Ndukwe, S. Omale and O. O. Opanuga, Reducing queues in a Nigerian hospital pharmacy, Afr. J. Pharm. Pharmacol., 5 (2011), 1020-1026.
22 H. P. Phua, Waiting Times at Public Sector Emergency Departments, Working paper, Health Information Management Branch, Ministry of Health, Singapore, 2005.
23 P. K. Plunkett, D. G. Byrne, T. Breslin, K. Bennett and B. Silke, Increasing wait times predict increasing mortality for emergency medical admissions, Eur. J. Emerg. Med., 18 (2011), 192-196.
24 W. Rauf, J. J. Blitz and M. M. Geyser and A. Rauf, Quality improvement cycles that reduced waiting times at Tshwane district hospital emergency department, S. Afr. Fam. Pract., 50 (2008), 43-43e.
25 G. F. Reed, F. Lynn and B. D. Meade, Use of coefficient of variation in assessing variability of of quantitative assays, Clin. Diagn. Lab. Immunol., 9 (2002), 1235-1239.
26 D. Ru, M. L. McCarthy and J. S. Desmond, et al, Characterizing waiting room time, treatment time, and boarding time in the emergency department using quantile regression, Acad. Emerg. Med., 17 (2010), 813-823.
27 L. Siciliani and J. Hurst, Tackling excessive waiting times for elective surgery: A comparative analysis of policies in 12 OECD countries, Health Policy, 72 (2005), 201-215.
28 Y. Sun, K. L. Teow, B. H. Heng, C. K. Ooi and S. Y. Tay, Real time prediction of waiting time in the emergency department using quantile regression, Ann. Emerg. Med., 60 (2012), 299-308.
29 H. Tekiner and D. Coit, System reliability optimization considering uncertainty: minimization of a coefficient of variation measure, Proceedings of the 2008 Industrial Engineering Research Conference, 2008, 995-1000.
30 D. A. Thompson, P. R. Yarnold, D. R. Williams and S. L. Adams, Effects of actual waiting time, perceived waiting time, information delivery, and expressive quality on patient satisfaction in the emergency department, Ann. Emerg. Med., 28 (1996), 657-665.
31 D. A. Thompson and P. R. Yarnold, Relating patient satisfaction to waiting time perceptions and expectations: the disconfirmation paradigm, Acad. Emerg. Med., 2 (1995), 1057-1062.
32 E. U. Weber, S. Shafir and A.-R. Blais, Predicting risk sensitivity in humans and lower annimals: Risk as variance or coefficient of variation, Psychol. Rev., 111 (2004), 430-445.
33 L. Zhao and B. Lie, Modeling and simulation of patient flow in hospitals for resource utilization, 2008. Available from: http://www.scansims.org/sims2008/02.pdf.
34 Z. C. Zhu, B. H. Heng and K. L. Teow, Reducing consultation waiting time and clinic overtime in outpatient clinic: challenges and solution, in Management Engineering for Effective Healthcare Delivery: Principles and Applications, Medical Information Science Reference (eds. A. Kolker and P. Story), Hershey, Pennsylvania, (2011), 229-245.

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