Table 1.

Outcome parameter (morbidity, length of hospital stay and hospital readmission) after appendectomy for acute appendicitis (n = 1570) and negative appendicitis (n = 68)

	Outcome parameter	Intraoperative and/or pathological appendicitis	Negative appendectomies	p value
Number		1570 (96)	68 (4)
In-hospital	Clavien–Dindo			0.317
	0	1471 (94)	66 (97)
	I	25 (2)	0 (0)
	II	24 (1)	0 (0)
	III	38 (2)	2 (3)
	IV	10 (1)	0 (0)
	V	2 (0)	0 (0)
	Cause for morbidity			–
	Surgical causes
	Wound infection	19 (19)	0 (0)
	Intra-abdominal abscess	13 (13)	0 (0)
	Paralysis/ileus	6 (6)	0 (0)
	Bleeding	4 (4)	0 (0)
	Appendiceal stump insufficiency	0 (0)	0 (0)
	Non-surgical causes	12 (12)	1 (50)
	Cardio-pulmonary complication	12 (12)	1 (50)
	Uro-genital complication	7 (7)	0 (0)
	Others	38 (38)	1 (50)
	Re-surgery	21 (1)	1 (1)	1.000
	Length of postoperative hospital stay (in days)	3.9 ± 4.5	3.4 ± 3.6	0.003
After discharge	Appendectomy-related readmission	30 (2)	0 (0)	0.269
	Reasons for readmission		–	–
	Paralysis/ileus	9 (30)
	Intra-abdominal abscess	5 (17)
	Malignancy	5 (17)
	Wound infection	4 (13)
	Abdominal pain	4 (13)
	Others	3 (10)

Significant p values are in bold