Laparoscopic treatment of perforated appendicitis

Table 2 Population-based studies of patients with perforated appendicitis in United States: Profiles of study, length of stay, and medical costs

Study	Patient population	Data source	Study period	Patient numbers	Length of hospital stay, d	Medical costs, USD
Tuggle et al[12]	Adults	NSQIPD	2005-2007	LA: 2060, OA: 730	LA: 3.97b	-
					OA: 5.13
Tiwari et al[16]	Adults	UHCD	2006-2008	LA: 5212	LA: 4.34b	LA: 12125b
				OA: 5323	OA: 7.31	OA: 17594
Masoomi et al[6]	Adults	NISD	2006-2008	LA: 69840	LA: 4.0b	LA: 32487b
				OA: 68344	OA: 6.0	OA: 38503
Oyetunji et al[13]	Children < 18 yr	HCUP	1998-2007	Total: 72787	LA: 5.06b	LA: 27951b
				LA: 29.2%	OA: 5.60	OA: 24965
				OA: 70.8%
Jen et al[45]	Children < 18 yr	CAPDD	1999-2006	LA: 9246	LA: 5.2b	-
				OA: 21347	OA: 5.5

^bP < 0.01 vs perforated appendicitis (OA) group. NISD: Nationwide Inpatient Sample Database; UHCD: University Health System Consortium Database; HCUP: Healthcare Cost and Utilization Project; CAPDD: California Patient Discharge Database; NSQIPD: (American College of Surgeon’s) National Surgical Quality Improvement Project Database; LA: Laparoscopic appendectomy; IAA: Intra-abdominal abscess.