Table 2 –

Total proportion of ambulatory surgery encounters with MIS (laparoscopic, thoracoscopic), NASS database.

Ambulatory surgery encounters	Unweighted total	Weighted total	(95% CI)	%	(95% CI)
2016
Visits with ≥ 1 MIS procedure	1,279,252	1,800,349	(1,743,793–1,856,905)	16.9	(16.5–17.3)
Total visits	7,608,879	10,623,113	(10,300,889–10,945,337)
2017
Visits with ≥ 1 MIS procedure	1,311,328	1,836,254	(1,779,245–1,893,263)	17.4	(17.0–17.8)
Total visits	7,647,636	10,570,649	(10,251,453–10,889,845)
2018
Visits with ≥ 1 MIS procedure	1,364,055	1,921,850	(1,858,501–1,985,199)	18.0	(17.6–18.4)
Total visits	7,693,084	10,696,13	(10,357,508–11,034,754)