Study	Reason for exclusion
Aust 1993	Comment to Kingsnorth 1992
Bay‐Nielsen 2004	Review
Bergin 1998	Comparison about different suture materials
Carter 1993	Comment to Kingsnorth 1992
Cunningham 1996	No comparisons between surgical techniques
Deysine 2006	CCT
Kawji 1999	CCT
Kingsnorth 1995	Comment on Kingsnorth 1992
Koninger 2004	Data considered in Butters 2007
Manson 1993	Comment to Kingsnorth 1992
Negro 1997	Comment to Schrenk 1996
Panos 1992	Full text not available
Paul 1993	Data reprised in Paul 1994
Prieto‐Diaz‐Chavez 2009	Data on primary inguinal hernia not extractable
Pyka 2003	Full text not available
Stanislawek 2003	Full text not available
Strand 1998	Full text not available
Wayman 1996	Out of topic
Woodward 1995	Letter to Paul 1994
Wyatt 1995	Comment to Kingsnorth 1992