Study	Reason for exclusion
Amato 1999	Not RCT though reports data from two previously published RCTs
Bailie 1990	Compares O‐set with UVXD germicidal system
Balteau 1991	Not RCT
Buoncristiani 1989	Not RCT
Burkart 1990	Compared standard spike with Ultraset
Cancarini 1995	RCT but patients randomised to "flushing" versus "flushing plus in line disinfectant" not to Y‐set, double‐bag or standard spike systems
Correa‐Rotter 1997	Abstract only publication, no data available September 2016
de Fijter 1994	Compared Y‐connector CAPD with CCPD
Durand 1995	Not RCT
Garcia‐Lopez 1994	Not RCT
Hall 1989	Possible quasi‐RCT but compares two non‐disconnect systems
Holley 1994	Not RCT
Huang 2001	Not RCT
Junor 1989	Not RCT
Lee 1997	Not RCT
Lempert 1986	Not RCT
Ong 2003	Comparisons not relevant to this review. Study compared two Y‐disconnect systems.
Orange 1987	Not RCT
Piraino 1993	Not RCT
Port 1992	Not RCT
Ryckelynck 1988	Probable RCT but patients randomised to "soaking" or not "soaking" connectors in povidone iodine
Smith 1997	Not RCT and specifically concerns automated peritoneal dialysis and not CAPD
Smith 1997a	Not RCT and specifically concerns automated peritoneal dialysis and not CAPD
Tan 2005	Compared ANDY.disc system to Ultrabag system
Tielens 1993	Not RCT
Viglino 1989	RCT but comparing Y‐set and modification of Y‐set (Y‐set with two short branches) no comparison with standard spike or double‐bag systems
Viglino 1993	RCT but comparing Y‐set and modification of Y‐set (T‐set with disinfectant) no comparison with standard spike or double‐bag systems
Wong 2006	Compared ANDY‐Disc system with UltraBag system
Wust 1985	Not RCT