Table 2.

Outcome measures.

	All Patients (n = 24,708)	Acute Appendicitis (n = 10,500)	Diverticulitis (n = 7993)	Acute Cholecystitis (n = 3114)	Acute Cholangitis (n = 3101)
Mortality, n (%)	254 (1.0%)	12 (0.1%)	40 (0.5%)	95 (3.1%)	107 (3.5%)
<18 years, n (%)	0/2457 (0%)	0/2408 (0%)	0/34 (0%)	0/6 (0%)	0/9 (0%)
18–64 years, n (%)	11/11,206 (0.1%)	0/6160 (0%)	4/3831 (0.1%)	2/747 (0.3%)	5/468 (1.1%)
≥65 years, n (%)	243/11,045 (2.2%)	12/1932 (0.6%)	36/4128 (0.9%)	93/2361 (3.9%)	102/2624 (3.9%)
Length of stay, d	7 (4–11)	5 (3–8)	7 (5–10)	12 (7–20)	10 (6–15)

Data are expressed as percent or median and interquartile range, as indicated.