All trials registered | All results reported

The issues of hidden data are well known, and the BMJ’s open data campaign page documents some of the problems which have arisen as a result of clinical trial data remaining undisclosed.

At Evidence Live 2013 in Oxford this week, Fiona Godlee, BMJ editor in chief, convened a group of those closely involved with the AllTrials campaign, to discuss where we are now and what still needs to be done