Table 1

Summary of studies included

Study	Countries	Period of study	Recipient sex ratio (F:M)	Donor sex ratio (F:M)	Income level	GDI group	Most common indication for transplantation (n (%))
Darius 201422	Belgium	July 1993–November 2010	95:108	109:94	High income	Group 2	Biliary atresia	132 (65)
Haseli 201323	Iran	April 1999– March 2011	73:118	115:61	Lower middle income	Group 5	Cholestatic disease	81 (42)
Heaton 200824	UK	October 1993–July 2006	17:33	23:27	High income	Group 2	Biliary atresia	23 (46)
Julka 201425	Taiwan	March 2008– September 2010	40:47	49:38	High income	–	Biliary atresia	78 (90)
Kasahara 202126	Japan	November 1989 and December 2018	1858:1413	1809:1462	High income	Group 1	Chronic liver disease	2332 (71)
Lee 201627	Korea	January 2000–June 2014	82: 54	66:70	High income	Group 3	Biliary atresia	98 (72)
Li 201828	China	January 2009– September 2015	123: 129	147:105	Upper middle income	Group 2	Biliary atresia	242 (96)
Mohan 201729	India	September 2004–July 2016	80:120	121:77	Lower middle income	Group 5	Biliary atresia	72 (75)
Montenovo 201830	USA	1 March 2002 and 31 December 2016	408:392	460:340	High income	Group 1	Cholestatic disease	502 (63)
Nikeghbalian 200931	Iran	January 1997–March 2008	20:30	30:20	Lower middle income	Group 5	Wilson’s disease	16%
Oh 201032	Korea	1994–2006	64:49	70:46	High income	Group 3	Biliary atresia	70 (61)
Pan 202033	China	October 2006– August 2016	287:257	333:211	Upper middle income	Group 2	Cholestatic disease	488 (90)
Tannuri 201134	Brazil	June 1998– June 2010	72:49	73:48	Upper middle income	Group 1	Biliary atresia	81 (67)
Zhang 201835	China	June 2013– August 2016	70:64	86:48	Upper middle income	Group 2	Biliary atresia	113 (84)

F, female; GDI, Gender Development Index; M, male.