Donor-to-recipient gender match in liver transplantation: A systematic review and meta-analysis

Table 1 Quality of studies evaluated by the modified Newcastle-Ottawa scale

Ref	Selection				Comparability		Outcome
	Case definition	Representativeness	Selection of controls	Definition of controls	Comparable for therapy	Comparable for etiology	Assessment of outcomes	Integrity of follow-up	Quality score
Kahn et al[17]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★
Marino et al[18]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★
Grande et al[19]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★
Berrevoet et al[20]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★
Brooks et al[21]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★
Croome et al[22]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★
Grat et al[23]	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	★★★★★★★★★

Table 2 Demographic and clinical aspects of the selected studies

Ref.	Year	n	FU (mo)	Number for group				Graft survival (%)				Patient survival (%)
				M-M	F-F	M-F	F-M	M-M	F-F	M-F	F-M	M-M	F-F	M-F	F-M
Kahn et al[17]	1993	883	2	350	121	312	50	72	64	72	40	85	83	83	62
Marino et al[18]	1995	462	24	201	71	92	98	72	64	78	55	77	82	82	66
Grande et al[19]	1997	423	60	189	64	69	101	52	64	59	71	NA	NA	NA	NA
Berrevoet[20]	1997	105	6	40	12	32	21	65	67	66	71	78	100	81	86
Brooks et al[21]	1997	994	24	392	219	247	126	74	76	76	56	NA	NA	NA	NA
Croome et al[22]	2013	1042	120	412	217	249	164	75	65	76	59	NA	NA	NA	NA
Grat et al[23]	2015	76	120	-	29	47	-	-	75	73	-	NA	NA	NA	NA

FU: Follow-up; M: Male; F: Female; NA: Not available.