Annals of Internal Medicine

Annals of Internal Medicine (Ann Intern Med) is an academic medical journal published by the American College of Physicians (ACP). It publishes research articles and reviews in the area of internal medicine. Its current editor is Harold C. Sox.

Annals of Internal Medicine had a 2006 impact factor of 14.8, which makes it among the most-cited of general clinical medical journals, only exceeded by JAMA, The Lancet and New England Journal of Medicine. In 2005, Annals' circulation approximated 90,000.

History
Founded in 1927, Annals of Internal Medicine has been published twice monthly since 1988. Former Editor-in-Chief, Edward Huth, has published details of the journal's history. Medical publishing innovations by the journal include:

1987: Proposal for structured abstracts published in the April issue; first structured abstracts published.

1994: Research on the effects of peer review.

1997: Guidelines for the use of Bayesian interpretation of significance testing included in information for authors.

1999: Summaries for patients introduced for original research articles.

2003: Editors' notes introduced to summarize the articles' findings, implications, and limitations.

2004: Limitations section added to standard structured abstracts.

Online availability
An archive of issues from 1993 is available at the journal's website in text and PDF (from 1999) formats. Material over six months old is freely accessible, and access to all papers is also provided free of charge to developing countries.