Table 1 Electronic search strategy for mouthguard, helmet/headgear, face shield use and concussion, with number of identified citations
Electronic databaseHelmet/headgear citationsMouthguard citationsFaceshield citations
Ovid MEDLINE (1950–September week 3 2008)42646137
Ovid Healthstar (1966–August 2008)40743836
SportDiscuss (1830–Sept 2008)51932837
EMBASE (1980 to 2008 Week 38)4258538
PubMed (1950–Sept 2008)28090041
CINAHL (1982–Sept 2008)14586
Ovid OLDMEDLINE (1950–1965)060
Cochrane Database of Systematic Reviews (3rd Quarter 2008)400
ACP Journal Club (1991 to August 2008)000
Database of Abstracts of Reviews of Effects (3rd Quarter 2008)530
Cochrane Central Register of Controlled Trials (3rd Quarter 2008)11140
AMED—Allied and complementary medicine (1985 to Sept 2008)1570