Abstract
This paper is focused on the factors causing long patient waiting time/clinic overtime in outpatient clinics and how to mitigate them using discrete event simulation. A two-week period of data collection is conducted in an outpatient clinic of a Singapore government hospital. Detailed time study from patient arrival to patient departure is conducted, and the possible factors causing long patient waiting time/clinic overtime are discussed. A discrete simulation model is constructed to illustrate how to improve the clinic performance by mitigating the detected factors. Simulation and implementation results show that significant improvement is achieved if the factors are well addressed.
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http://medical-dictionary.thefreedictionary.com [24 March 2010].
http://www.wikipedia.org [24 March 2010].
http://www.moh.gov.sg/mohcorp/pressreleases.aspx?id=964 [24 March 2010].
Bailey, N., A study of queues and appointment systems in hospital outpatient departments, with special reference to waiting-times. J R Stat Soc Ser 14:185–189, 1952.
Welch, J. D., and Bailey, N., Appointment systems in hospital outpatient departments. The Lancet 259:1105–1108, 1952.
Welch, J. D., Appointment systems in hospital outpatient departments. Oper Res Quart 15(3):224–237, 1964.
Soriano, A., Comparison of two scheduling systems. Oper Res 14:388–397, 1966.
Liu, L., and Liu, X., Block appointment systems for outpatient clinics with multiple doctors. J Oper Res Soc 49(12):1254–1259, 1998.
Vanden Bosch, P. M., Dietz, C. D., and Sumeoni, J. R., Scheduling customer arrivals to a stochastic service system. Nav Res Logist 46:549–559, 1999.
Lau, H., and Lau, A. H., A fast procedure for computing the total system cost of an appointment schedule for medical and kindred facilities. IIE Trans 32(9):833–839, 2000.
Ho, C., and Lau, H., Minimizing total cost in scheduling outpatient appointments. Manage. Sci. 38(12):1750–1764, 1992.
Wang, P. P., Static and dynamic scheduling of customer arrivals to a single-server system. Nav. Res. Logist. 40:345–360, 1993.
Cayirli, T., and Veral, E., Outpatient scheduling in health care: a review of literature. Prod. Oper. Manage. Soc. 12(4):519–549, 2003.
Ho, C., and Lau, H., Evaluating the impact of operating conditions on the performance of appointment scheduling rules in service systems. Eur. J. Oper. Res. 112:542–553, 1999.
Aharonson-Daniel, L., Paul, R. J., and Hedley, A. J., Management of queues in out-patient departments: the use of computer simulation. J. Manage. Med. 10(6):50–58, 1996.
Clague, J. E., Reed, P. G., Barlow, J., Rada, R., Clarke, M., and Edwards, R. H. T., Improving outpatient clinic efficiency using computer simulation. Int J Health Care Qual Assur 10(5):197–201, 1997.
Harper, P. R., and Gamlin, H. M., Reduced outpatient waiting times with improved appointment scheduling: a simulation modelling approach. OR Spectrum 25(2):207–222, 2003.
Fetter, R., and Thompson, J., Patients’ waiting time and doctors’ idle time in the outpatient setting. Health Services Res. 1:66–90, 1966.
Klassen, K. J., and Rohleder, T. R., Scheduling outpatient appointments in a dynamic environment. J. Oper. Manag. 14(2):83–101, 1996.
http://www.simul8.com/ [24 March 2010].
Acknowledgements
The authors wish to sincerely thank staffs in the Singapore government hospital for providing source data used in this study and professional opinions.
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Zhu, Z., Heng, B.H. & Teow, K.L. Analysis of Factors Causing Long Patient Waiting Time and Clinic Overtime in Outpatient Clinics. J Med Syst 36, 707–713 (2012). https://doi.org/10.1007/s10916-010-9538-4
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DOI: https://doi.org/10.1007/s10916-010-9538-4