Table 1. Descriptive statistics of the epidemiological characteristics of appendicitis patients (n=6,526) at Ewha Womans University Mokdong Hospital during the study period (2001–2018)

Patients’ characteristics	Number of patients (%)	OR (95% CI)	P-value
Sex
Female	3,192 (48.91)	Ref.	0.7141
Male	3,334 (51.09)	1.011 (0.954−1.072)
Age, yr
Age (mean±SD)	31.93±19.08
<10	704 (11.22)	0.972 (0.853−1.106)	0.6649
10−19	1,308 (20.85)	0.992 (0.884−1.113)	0.8866
20−29	1,066 (17.00)	0.981 (0.870−1.105)	0.7473
30−39	1,189 (18.96)	1.004 (0.893−1.129)	0.9507
40−49	851 (13.57)	0.999 (0.881−1.132)	0.9828
50−60	590 (9.41)	0.999 (0.872−1.145)	0.9932
≥60	564 (8.99)	Ref.
Season
Warm season	3,071 (47.06)	Ref.	0.7408
Cold season	3,455 (52.94)	1.010 (0.953−1.071)