Table 1.

Baseline characteristics of patients with perforated appendicitis.

	All n = 65	No drain n = 33	Drain n = 32	p-value
Age [y]	10.53	10.70	10.34	0.6985a
Gender [m/f]	34/31	16/17	18/14	0.6222b
WBC [G/l]	16.65	16.62	16.68	0.9622a
CRP [mg/dl]	8.45	7.50	9.40	0.2000c
Type of operation (%)
Laparoscopic	57	28 (49.12)	29 (50.88)
Open	6	5 (83.33)	1 (16.66)
Conversion	2	0 (0)	2 (100)

^aUnpaired t-test.

^bFisher's exact test.

^cMann-Whitney U test.