Kimmick 2005.

Methods	Cluster‐randomised controlled trial
Data	Setting: secondary care and academic institutions, USA. Practitioners and researchers from 126 Cancer and Leukaemia Group B (CALGB) institutions
Comparisons	Investigated the effect of different trial information methods Educational intervention of standard information plus an educational symposium, geriatric oncology educational materials, monthly mailings and emails for 1 year, lists of available protocols for use on patient charts, case discussion seminar. This was compared to standard information of periodic notification of all existing CALGB trials by the CALGB Central Office, and CALGB website access.
Outcomes	Proportion recruited to trial
Notes	Clustering was accounted for in the analysis.
Risk of bias
Item	Authors' judgement	Description
Random Sequence generation ok?	Unclear	Randomisation mentioned but no more details
Allocation concealment?	Unclear	As above
Blinding of participants and personnel ok?	Unclear	Not clear what details were given to the participants about the study before it started
Blinding of outcome assessment ok?	Yes	Objective outcome
Incomplete outcome data handled ok?	Yes	Adequate
Free of selective reporting?	Yes	Recruitment outcome presented, which is all the review needs
Was the study free of other bias?	Yes	No other biases apparent
Overall bias?	Unclear	Unclear risk of bias