Data in drug advertisementsBMJ 1994; 308 doi: https://doi.org/10.1136/bmj.308.6926.474a (Published 12 February 1994) Cite this as: BMJ 1994;308:474
- E Healing
- Janseen Pharmaceutical, Grove, Oxfordshire OX12 0DQ
EDITOR, - After Harrington's criticism of the use of unpublished data in drug advertisements1 and Humphreys's response2 I surveyed advertisements in the BMJ during 1993 to discover more about where drug studies are published. I analysed 48 advertisements, which contained 175 references. Fifteen advertisements (9%) referred to “data on file.” This figure is in line with results of an earlier study, which found that 11% of references …
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial