Study	Reason for exclusion
Ashe 2004	Patient directed intervention and no objective outcomes
Berwick 1986	Controlled before‐after study (CBA)
Bliuc 2006	Patient directed intervention and no objective outcomes
Broadhurst 2007	CBA
Buchbinder 2001	CBA
Casez 2006	CBA
Charalambous 2002	CBA
Che 2006	CBA
Chevalley 2002	CBA
de vos Meiring 1990	CBA
Deyo 2000	ITS study with only two pre‐intervention measurements
Freeborn 1997	CBA
Gallagher 1998	ITS study with only one pre‐ and two post‐intervention measurements
Geusens 2008	CBA
Greenfield 1975	Change of imaging behaviour was not a primary objective of the study
Hawker 2003	CBA with historical controls
Jousimaa 2002	Not specific for musculoskeletal conditions and data not available
Kane 2006	ITS study with only one pre‐ and two post‐intervention measurements
Kerry 2002	Participants randomised to x‐ray or not, and no imaging outcomes
Majumdar 2007a	Follow up of included study (Majumdar 2004), but all participants received the intervention so not controlled
Marchiori 2000	Abstract only, not enough information provided to make a decision. Contact with authors but unable to provide more information
Martin 1980	Not musculoskeletal condition specific
Moskowitz 2000	ITS study with only two pre‐ and three post‐intervention measurements
Pazirandeh 2002	CBA
Polinski 2006	CBA
Robling 1999	Knowledge only outcome
Solomon 2006	Patient directed intervention and no objective outcomes
Streeten 2006	CBA
Stross 1980	Change of imaging behaviour was not a primary objective of the study
Torgerson 1997	Randomised to BMD or not, no imaging outcomes
Wroe 2000	No control group for outcome of BMD test received

First reason for study exclusion listed