Table 1.

Variability in length of the proficiency gain curves observed with esophagectomy for cancer

Publication	Data set origin	Procedure	Outcome studied	Length of proficiency gain curve (cases)
Mackenzie et al23	England	Minimally invasive esophgectomy	30-Day mortality	19
			90-Day mortality	17
			Re-intervention	19
			Conversion	6
			Hospital stay	5
van Workum et al24	European multi-center	Minimally invasive esophagectomy	Anastomotic leak, Textbook outcome & operative time	119
Markar et al26	Sweden	Open esophagectomy	30-Day mortality	15
			90-Day mortality	22
			1-Year mortality	53
			3-Year mortality	5
			5-Year mortality	59