Letters
Accuracy of recording acute myocardial infarction events
Authors’ reply to Stevens and McManus
BMJ 2013; 346 doi: https://doi.org/10.1136/bmj.f3741 (Published 11 June 2013) Cite this as: BMJ 2013;346:f3741
- Anoop Dinesh Shah, clinical research fellow1,
- Emily Herrett, research fellow2,
- Rachael Boggon, research statistician34,
- Spiros Denaxas, senior research associate1,
- Liam Smeeth, professor of clinical epidemiology and general practitioner2,
- Tjeerd van Staa, professor of pharmacoepidemiology234,
- Adam Timmis, professor of clinical cardiology5,
- Harry Hemingway, professor of clinical epidemiology1
- 1Department of Epidemiology and Public Health, Clinical Epidemiology Group, University College London, UK
- 2London School of Hygiene and Tropical Medicine, London, UK
- 3Clinical Practice Research Datalink Group, Medicines and Healthcare Products Regulatory Agency, London, UK
- 4Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
- 5Barts and the London School of Medicine and Dentistry, London, UK
- anoop{at}doctors.org.uk
We thank Stevens and McManus for pointing out that using unlinked primary care databases may underestimate the absolute risk of myocardial infarction because these databases fail to capture all events.1 2 Non-differential under-recording may not cause bias in studies solely focusing on relative effects, …
Log in
Log in using your username and password
Log in through your institution
Subscribe from £173 *
Subscribe and get access to all BMJ articles, and much more.
* For online subscription
Access this article for 1 day for:
£38 / $45 / €42 (excludes VAT)
You can download a PDF version for your personal record.