Infected pancreatic necrosis: Not necessarily a late event in acute pancreatitis

Table 1 Timing of pancreatic infection in the referred clinical studies n (%)

Study ID	Setting	No. of patients with confirmed IPN	Duration of disease at the time of diagnosing IPN
			Day 1-7	Day 8-14	Day 15+
Beger et al[8], 1986	Germany	45	5 (11)	8 (18)	32 (71)
Rattner et al[9], 1992	USA	44	2 (5)	10 (23)	32 (72)
Gerzof et al[10], 1987	USA	36	8 (22)	12 (33)	16 (45)
Tsui et al[16], 2009	China	65	1 (2)	15 (23)	49 (75)
Besselink et al[17], 2009	Netherlands	98	5 (5)	13 (13)	80 (82)
Overall		288	21 (7)	58 (20)	209 (73)

IPN: Infected pancreatic necrosis.