Table 1.

Literature review and summary on perception waiting time and actual waiting time

Study	Year	Outcome	Conclusions
Thompson DA, et al. [3]	1996	PWT	Satisfaction depended more on PWT than AWT.
Gartner D, et al. [8]	2020	PWT	Reducing PWT could potentially improve patient satisfaction.
Sun J, et al. [2]	2017	AWT	Reducing AWT could improve patient satisfaction.
Michael M, et al. [4]	2013	AWT	Significant reductions in AWT was observed along with an increase in patient satisfaction.
Xie Z, et al. [5]	2017	AWT	AWT was negatively associated with patient satisfaction.
Xie W, et al. [6]	2019	AWT	The reservation service shortened patient’s AWT and improved patient satisfaction.
Liu J, et al. [7]	2019	AWT	Outpatients’ overall satisfaction was associated with AWT.

PWT Perception Waiting Time, AWT Actual Waiting Time