Proxy for suicide attempts was inappropriate in study of changes in antidepressant use after FDA warningsBMJ 2014; 349 doi: https://doi.org/10.1136/bmj.g5644 (Published 09 October 2014) Cite this as: BMJ 2014;349:g5644
- Robert O Bartlett, core trainee year 1 psychiatrist1
- 1Hergest Unit, Ysbyty Gwynedd, Penrhosgarnedd, Bangor LL57 2PW, UK
Lu and colleagues used poisoning by psychotropic agents (international classification of diseases, 9th revision (ICD-9) code 969) as their “proxy for population level suicide attempts.”1 They state that non-fatal poisoning by psychotropic drugs has a positive predictive value of 79.7% for suicide attempts. This is based …
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