Study	Reason for exclusion
Colvin 2006	PN was part of a package given to the index patient and the effect of PN alone cannot be evaluated
Garcia 2003	Study not on PN
Hogben 2005	Study was discontinued due to low recruitment
Marion 2009	Study not on PN
Okonofua 2003	No STI diagnosis was made
Richens 2010	Study not on PN
Shain 2004	Study not on PN
Sherman 2005	Study was discontinued due to low recruitment
Thurman 2008	Not an RCT
Wu 2009	STI diagnosis not made in all index patients
Young 2007	Not an RCT

PN: partner notification; RCT: randomised controlled trial; STI: sexually transmitted infections.