Study	Reason for exclusion
al Nozha	not received
Andes 1989	insufficient condom usage information
Cameron 1989 ab	insufficient information on the entire sample
Feldblum 1992 ab	insufficient information (see Hira 1997)
Feldblum ab	insufficient information on condom use and seroconversions
Flepp	not received
Guimaraes ab	insufficient information on condom use and seroconversions
Hira 1989 ab	Hira 1997 has a larger cohort
Jingu 1993 ab	insufficient information
Jingu ab	insufficient information on condom use and seroconversions
Kamenga 1989 ab	Kamenga 1991 more recent
Kamps 1989 ab	insufficient information on follow‐up time
Lawrence 1985	insufficient information on condom usage
Laye 1998 ab	insufficient information on condom usage
Lo 1992 ab	insufficient information on condom use and seroconversions
Mandelbrot 1997	Insufficient information on exposure time
Massimo 1992 ab	More information in Musicco 1994
Moss 1992 ab	insufficient information on condom use and seroconversions
Musicco 1992 ab	More detail in Saracco 1993; Musicco 1994
Musicco 1993 ab	More detail in Saracco 1993; Musicco 1994
Nagachinta ab	insufficient information on condom use and seroconversions
Nastiff 1998 ab	insufficient information on condom use and seroconversions
O'Brien 1993	insufficient information on condom usage
O'Brien 1993 ab	insufficient information on condom usage
Operskalski 1997	insufficient information on condom usage
Padian	insufficient information on condom usage
Padian 1989 ab	insufficient information on condom usage and seroconversion
Padian 1997	insufficient information on condom usage
Papetti	insufficient information on condom usage
Papetti 1992 ab	insufficient information on condom use and seroconversions
Papetti ab	insufficient information on seronegative partners (see Papetti 1992)
Saracco 1989 ab	insufficient information
Serwadda 1995	insufficient information on condom usage
Sion	insufficient information on total exposure time to index case
Sion 1992 ab	insufficient information on condom usage
Skurnick 1995 ab	insufficient information on seroconversions
Tice ab	insufficient information on condom use and seroconversions
Tor 1992 ab	insufficient information on condom usage