eTable 4. Morbidity and mortality of inpatient cases with appendectomy as sole intervention for appendicitis.

		2010		2011		2012		2013		2014		2015		2016		2017
		n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
Total number of patients		113 614	100.0	113 975	100.0	111 957	100.0	108 437	100.0	107 322	100.0	104 922	100.0	102 997	100.0	102 464	100.0
Indicators of complicated course	Septicemia	578	0.5	533	0.5	545	0.5	535	0.5	578	0.5	650	0.6	677	0.7	727	0.7
	Blood transfusions (≥ 6 units)	108	0.1	104	0.1	90	0.1	77	0.1	75	0.1	52	0.05	59	0.1	50	0.05
	Postoperative ileus	494	0.4	468	0.4	473	0.4	454	0.4	509	0.5	526	0.5	521	0.5	537	0.5
	Mechanical ventilation > 24 h	434	0.4	399	0.4	384	0.3	346	0.3	320	0.3	363	0.3	329	0.3	309	0.3
	Complex intensive care	1796	1.6	1806	1.6	1693	1.5	1678	1.5	1744	1.6	1690	1.6	1697	1.6	1609	1.6
	At least one indicator of complicated course	2540	2.2	2496	2.2	2432	2.2	2346	2.2	2512	2.3	2501	2.4	2521	2.4	2502	2.4
In-hospital mortality (all appendectomy cases)		184	0.16	174	0.15	138	0.12	139	0.13	134	0.12	112	0.11	114	0.11	118	0.12
In-hospital mortality (among patients with at least one indicator of complicated course)		136	5.4	131	5.3	105	4.3	106	4.5	107	4.3	86	3.4	81	3.2	86	3.4