Table 5. Association between Surgical Setting and Surgeon Annual Cataract Surgery Volume^a.

	Surgeon Annual Cataract Surgery Volume N (%)
Surgical Setting	1-50	51-200	201-500	501-1000	1001+
ASCb	39,890 (29.2)	376,086 (37.8)	679,835 (51.0)	386,220 (66.1)	222,688 (78.8)
Hospital	96,867 (70.8)	617,556 (62.2)	654,537 (49.0)	197,726 (33.9)	60,058 (21.2)

^aAmong surgeries where both the surgeon and surgical setting were known (excludes 3.3% of records); p<0.0001 by Mantel-Haenszel test for trend.

^bASC=Ambulatory Surgery Center