summary
Between March 2000 and December 2008 authors disclosed conflicts of interest in 9% of articles in the Tijdschrift voor Psychiatrie. For the same period, in the articles dealing with pharmaceuticals, the percentage of articles containing disclosures of conflict of interest was considerably higher, namely 24%. The policy of the journal with regard to the disclosure of conflicts of interest has helped to promote transparency. Further efforts are needed to encourage authors to disclose conflicts of interest.