Study	Reason for exclusion
Abdelilah 1991	Does not report study design of interest
Adesso 1974	Does not report outcome of interest
Adler‐Grinberg 1985	Does not report outcome of interest
Alaii 2003	Does not report outcome of interest
Alpert 1966	Does not report study design of interest
Altundag 2007	Does not report study design of interest
Anonymous 1994	Does not report study design of interest
Armstrong 2000	Does not report intervention of interest
Aronson 1980	Does not report study design of interest
Asher 1995	Does not report outcome of interest
Atkins 2004	Does not report outcome of interest
Bablouzian 1997	Does not report study design of interest
Barnes‐Boyd 1995	Does not report study design of interest
Barone 1986	Does not report study design of interest
Bass 1985	Does not report study design of interest
Baudier 1996	Does not report study design of interest
Beirens 2008	Does not report study design of interest
Belanger‐Bonneau 2002	Does not report study design of interest
Bernard‐Bonnin 2003	Does not report study design of interest
Bjerre 1997	Does not report participants of interest
Bjerre 1998a	Does not report participants of interest
Bjerre 1998b	Does not report participants of interest
Bjerre 2000	Does not report participants of interest
Bouter 1989	Trial did not take place
Braden 1979	Does not report outcome of interest
Cagle 2006	Does not report study design of interest
Cardenas 1993	Does not report outcome of interest
Carmel 1991	Does not report outcome of interest
Chapman 2000	Does not report outcome of interest
Charney 1983	Does not report intervention of interest
Chen 2003	Does not report study design of interest
Chevallier 1999	Does not report study design of interest
Chung 2004	Does not report outcome of interest
Cooper 1988	Does not report study design of interest
CPSC (USA) 2004	Does not report study design of interest
Davidson 1994	Does not report outcome of interest
Day 2001	Does not report study design of interest
Dershewitz 1984	Does not report study design of interest
Dickson 1964	Does not report study design of interest
DiGuiseppi 1999	Does not report study design of interest
DiLillo 2001	Does not report outcome of interest
Duckart 1998	Does not report study design of interest
Duff 2002	Does not report study design of interest
Dugdill 1991	Does not report study design of interest
Duggan 1999	Does not report intervention of interest
Duncan 1996	Does not report outcome of interest
Duperrex 1999	Does not report study design of interest
Eaton‐Jones 2000	Does not report study design of interest
Eckelt 1985	Does not report study design of interest
Ekman 1996	Does not report study design of interest
Facchin 2004	Does not report study design of interest
Fallat 1993	Does not report study design of interest
Farmakakis 2004	Does not report study design of interest
Fergusson 2005	Does not report outcome of interest
Fisher 1985	Does not report study design of interest
Frank 1992	Does not report outcome of interest
Frankenfield 1991	Does not report study design of interest
Frederick 2000	Does not report outcome of interest
Gaffney 1996b	Does not report outcome of interest
Gallagher 1984	Does not report study design of interest
Gallagher 1985	Does not report study design of interest
Gatheridge 2004	Does not report outcome of interest
Geddis 1989	Does not report study design of interest
Gielen 1996	Does not report outcome of interest
Gielen 2001	Does not report participants of interest
Ginnelly 2005	Does not report study design of interest
Glotzer 1997	Does not report study design of interest
Grant 1992	Does not report outcome of interest
Grant 2004	Does not report study design of interest
Gray 1979	Does not report intervention of interest
Gresham 2001	Does not report outcome of interest
Gross 1990	Does not report intervention of interest
Grossman 2000	Does not report outcome of interest
Guldvog 1993	Trial did not take place
Gutelius 1977	Does not report intervention of interest
Guyer 2000	Does not report intervention of interest
Hall 1985	Does not report study design of interest
Hall 1994	Does not report study design of interest
Hardy 1989	Does not report intervention of interest
Hardy 1996	Does not report outcome of interest
Hardy 2002	Does not report outcome of interest
Harre 1998a	Does not report study design of interest
Harre 1998b	Does not report study design of interest
Harre 2000	Does not report study design of interest
Hemmo‐Lotem 2005a	Does not report study design of interest
Hemmo‐Lotem 2005b	Does not report study design of interest
Himle 2004	Does not report outcome of interest
HIPRC 2004	Does not report study design of interest
Huxley 1993	Does not report intervention of interest
Jackson 1980	Does not report study design of interest
Jackson 1983	Does not report study design of interest
Johnson 1993	Does not report intervention of interest
Johnson 2000	Does not report intervention of interest
Johnston 2002	Does not report outcome of interest
Jones 2001	Does not report study design of interest
Jordan 1993	Does not report study design of interest
Jordan 2003	Does not report intervention of interest
Kaplan 1999	Does not report study design of interest
Katcher 1987	Does not report study design of interest
Kendrick 2009	Does not report study design of interest
Ketvertis 2003	Does not report study design of interest
King 1999	Does not report study design of interest
Kitzman 1997	Does not report intervention of interest
Klassen 1995	Does not report study design of interest
Koniak‐Griffin 2003	Does not report intervention of interest
Korn 2009	Does not report study design of interest
Kravitz 1973	Does not report study design of interest
Krenzelok 1981	Does not report study design of interest
Kuhn 1994	Does not report study design of interest
Lagerberg 2000	Does not report study design of interest
Lamb 2006	Does not report outcome of interest
Lane 1971	Does not report participants of interest
Lanphear 1999	Does not report intervention of interest
Larcher 1987	Does not report study design of interest
Larson 1980	Does not report intervention of interest
Lealman 1983	Does not report study design of interest
Lechman 1991	Does not report outcome of interest
Leduc 1999	Does not report study design of interest
Lee 2002	Could not obtain reference
Lenton	Does not report study design of interest
Lenton 2000	Trial did not take place
Liller 1998	Does not report study design of interest
Liller 2003	Does not report outcome of interest
Linares 1979	Does not report study design of interest
Lindqvist 1998b	Does not report study design of interest
Loescher 1995	Does not report outcome of interest
Lowe 1999	Does not report outcome of interest
Luria 2000	Does not report outcome of interest
Mackenzie 2004	Does not report study design of interest
Malouin 2003	Does not report outcome of interest
Margolis 2001	Does not report study design of interest
Marion 2004	Does not report outcome of interest
McConnell 1996a	Does not report study design of interest
McConnell 1996b	Does not report outcome of interest
McWhirter 2000	Does not report outcome of interest
Melhuish 2008	Does not report outcome of interest
MET 1986	Does not report outcome of interest
Milliner 1980	Does not report study design of interest
Milne 1999	Does not report outcome of interest
Milne 2000	Does not report outcome of interest
Milne 2002	Does not report outcome of interest
Minchom 1984	Does not report study design of interest
Minkovitz 2001	Does not report intervention of interest
Minkovitz 2003	Does not report intervention of interest
Mondozzi 2001	Does not report outcome of interest
Moore 2004	Does not report study design of interest
Mori 1986	Does not report outcome of interest
Morrison 1988	Does not report study design of interest
Morrongiello 1998	Does not report outcome of interest
Naidoo 1984	Could not obtain reference
Nicholson 2002	Does not report study design of interest
Nossar 2001	Does not report study design of interest
Novick 1997	Does not report outcome of interest
O'Connor 1982	Does not report study design of interest
O'Connor 1990	Does not report outcome of interest
O'Donnell 1996	Does not report study design of interest
Oakley 1998	Does not report intervention of interest
Olds 1986	Does not report intervention of interest
Olds 1999	Does not report intervention of interest
Olds 2002	Does not report study design of interest
Palmisano 1981	Does not report study design of interest
Parcel 1983	Does not report study design of interest
Paulson 1981	Does not report study design of interest
Pena 1994	Does not report outcome of interest
Peterson 1984a	Does not report outcome of interest
Peterson 1984b	Does not report outcome of interest
Petridou 1994	Does not report study design of interest
Petridou 1995	Does not report study design of interest
Petridou 2002	Does not report study design of interest
Phillips 1980	Does not report study design of interest
Phillips 1986	Does not report study design of interest
Pocknall 1993	Does not report study design of interest
Polivka 1999	Does not report study design of interest
Potts 1998	Does not report study design of interest
Powell 2000	Does not report study design of interest
Quan 1990	Does not report outcome of interest
Rahman 2002	Could not obtain reference
Reichelderfer 1976	Does not report study design of interest
Rhoads 1999	Does not report intervention of interest
Rutstein 1977	Does not report study design of interest
Sadan 1995	Does not report study design of interest
Sahlin 1990	Does not report study design of interest
San Agustin 1973	Does not report study design of interest
Schnell 1993	Does not report study design of interest
Schwebel 2002	Does not report study design of interest
Sell 1977	Does not report study design of interest
Sherman 1980	Does not report study design of interest
Sibert 1977	Does not report study design of interest
Sibert 1999	Does not report study design of interest
Sibert 2002	Trial did not take place
Smith 1984	Does not report outcome of interest
Smith 2002	Does not report study design of interest
Smith 2006	Does not report outcome of interest
Smithson 1998	Does not report study design of interest
Smithson 2000	Does not report study design of interest
Solis 1991	Does not report study design of interest
Sorensen 1976	Does not report study design of interest
Spallek 2004a	Does not report study design of interest
Spallek 2004b	Does not report study design of interest
Speigel 1995	Does not report study design of interest
Spiller 2004	Does not report outcome of interest
St Pierre 1999	Does not report intervention of interest
Stanley 1979	Does not report study design of interest
Stennies 1999	Does not report outcome of interest
Stephen 1993	Does not report study design of interest
Stevens 2002	Does not report outcome of interest
Sullivan 1990	Does not report study design of interest
Sundelin 1996	Does not report outcome of interest
Svanstrom 1996	Does not report study design of interest
Swaine 2000	Does not report study design of interest
Taha 1999	Does not report study design of interest
Temple 1978	Does not report study design of interest
Tenn 1996	Does not report outcome of interest
Terzidis 2007	Does not report study design of interest
Thompson 1998	Does not report study design of interest
Thomson 1999	Does not report intervention of interest
Thuen 1994	Does not report study design of interest
Timpka 1999	Does not report outcome of interest
Towner 1996	Does not report outcome of interest
Towner 1998	Does not report outcome of interest
Velsog 1996	Does not report outcome of interest
Vernberg 1984	Does not report outcome of interest
Vogel 1968	Does not report outcome of interest
Webne 1989	Does not report study design of interest
Wester 1985	Does not report study design of interest
Whitfield 2000	Does not report study design of interest
Whitt 1982	Does not report outcome of interest
Wiggins 2004	Does not report intervention of interest
Wortel 1991	Does not report study design of interest
Wurtele 1989	Does not report outcome of interest
Young 2000	Does not report outcome of interest
Ytterstad 2000	Does not report study design of interest
Zwi 2004	Does not report study design of interest