Table 1.

Number of operations performed for each procedure in 2020 vs. 2018 and 2019

Procedure	Number of operations (2018)	Number of operations (2019)	Number of operations (2020)	vs. 2018	vs. 2019
Gastrectomy	37,733	37,173	32,723	86.7%	88.0%
Low anterior resection	22,099	22,763	21,506	97.3%	94.5%
Hepatectomy	6734	7019	6707	99.6%	95.6%
Pancreaticoduodenectomy	11,774	11,963	12,074	102.5%	100.9%
Appendectomy	57,742	59,152	60,094	104.1%	101.6%
Cholecystectomy	132,766	133,441	127,621	96.1%	95.6%
Valve replacement + valve plasty	21,938	21,887	20,355	92.8%	93.0%
Ascending aorta replacement + aortic arch replacement	11,170	11,375	11,186	100.1%	98.3%
Coronary artery bypass grafting	19,704	19,109	17,452	88.6%	91.3%
Abdominal aorta replacement	6985	6624	6249	89.5%	94.3%
Ventricular septal defect closure	1791	1698	1681	93.9%	99.0%
Lobectomy	31,677	33,815	31,174	98.4%	92.2%
Resection of mediastinal tumor	6011	6575	6152	102.3%	93.6%
Total mastectomy	48,276	51,435	50,283	104.2%	97.8%
Breast-conserving surgery	40,003	42,475	39,495	98.7%	93.0%
Sentinel node biopsy	45,501	49,728	48,848	107.4%	98.2%
Thyroidectomy	15,262	15,405	13,449	88.1%	87.3%
Parathyroidectomy	1824	1879	1827	100.2%	97.2%
Inguinal hernia repair (under age 16)	17,171	16,736	14,232	82.9%	85.0%
Appendectomy (under age 16)	8269	8150	7593	91.8%	93.2%
Total	544,430	558,402	530,701	97.5%	95.0%