The Safety of Laparoscopic Cholecystectomy in the Day Surgery Unit Comparing with That in the Inpatient Unit: A Systematic Review and Meta-Analysis

Table 2

Characteristics of the included studies in the meta-analysis.

Study	Group	No. initially randomized	No. accomplished the trial	Age	Prolong stay	Prophylactic analgesia	Cholangiogram	Discharge
Salleh et al. [39]
	DS	31	29	49.8 (21-75)	0%	Yes	Selectively	After 6 hours of postsurgical observation
	OS	31	29	49.8 (21-75)	0%			The following day after surgery
Kumar et al.[38]
	DS	32	32	^#	3.1%	Yes	NA	After 6-8 hours of postsurgical observation
	OS	33	33	^#	NA			Stay more than one night
Barthelsson et al. [37]
	DS	50	34	44 (22-68)	0%	Yes	Routinely	After 5-6 hours of postsurgical observation
	OS	50	39	45 (22-68)	NA			The next morning
Johansson et al. [36]
	DS	54	52	(18-70)	7.7%	Yes	Routinely	After 4-8 hours of postsurgical observation
	OS	53	48	(18-70)	12.5%			The following day after surgery
Curet et al. [35]
	DS	43	43	33 (18-68)	14%	Yes	Selectively	After 4 hours of postsurgical observation
	OS	37	37	43 (19-66)	5.4%			The following day after surgery
Young and O’Connell [34]
	DS	14	14	39 (26-48)	0%	NA	None	Within 8 hours after surgery
	OS	14	14	40 (21-50)	0%			23 h postsurgery
Hollington et al. [33]
	DS	74	60	45 (17-83)	18.3%	NA	Routinely	The evening of the operation day with at least 4 h of postsurgical observation
	OS	76	71	49 (17-83)	18.3%			The following day after surgery
Keulemans et al. [32]
	DS	40	37	39 (20-62)	8.1%	Yes	Selectively	Discharged before 7 PM within the operation day
	OS	40	37	48 (19-65)	NA			At least one-night stay after surgery

DS: day surgery; OS: overnight stay; ^#; NA: not available; .