Evidence Based Medicine
Where to Start
Dr. Jay Moreland, email:
jmoreland@m.cc.utah.edu
05/15/2008
A brief description of some EBM search resources and what they offer:
In general, I recommend searching from the top
sites to the bottom sites in this list when you are just learning to use these
sites. The reason for this search order, and the order of listing at our site,
is that the sites higher on the page generally tend to have higher levels of
evidence that are retrieved. See
"Levels of Evidence"
at Oxford for more information on this.
The Cochrane Collaboration is an ongoing
international project that seeks to answer clinical questions in all medical
fields by using meta-analysis of both published and unpublished studies.
Randomized controlled trials (RCTs)are used for the meta-analyses. The project
started originally in the field of maternal/fetal medicine, therefore it is
much better in this area than some other subjects. Continuously updated.
TRIP = "Turning Research Into Practice."
This is a search engine that looks through a combination of 26
databases of hyper links. At present there are over 10,000 links to
evidence-based topics. The engine currently searches key words in the titles
only. It searches many of the other sites listed here, but may only have a
partial version, such as a Cochrane abstract. As an example, it can retrieve
references to a Cochrane study, a POEM and other sites all with one search.
POEMS = "Patient Oriented Evidence that Matters."
CATs = "Clinically Appraised Topics." These are essentially equivalent in function.
These are brief reviews which are a summary of the best article or articles
that a clinician can find to answer a specific clinical question. The best
POEMS or CATs are reviews of either a meta-analysis or RCT, but when not
available, the best evidence that the author could find is used. There are specific
criteria that are used to determine relevance and validity. POEMS and CATs
referenced here are peer reviewed. These are now getting harder to find on the
web for free access.
he American College of Physicians-American
Society of Internal Medicine journals. We are now able to search all of the
available online ACP-ASIM journals. The database called "Best
Evidence," available on CD-ROM, consists of articles from the same
journals: The ACP Journal Club, Evidence-Based Medicine and Annals of Internal
Medicine. These are not original articles, but are usually either meta-analyses
or summaries of important RCTs. The subject matter is supposed to cover all
fields (Pediatrics, Medicine, OB-Gyn, etc) but much more is available for
general medicine questions. As of the year 2000 the two journals ACP Journal
Club and Evidence-based Medicine will merge to become just ACP Journal Club.
Quarterly Updates.
A British primary care site. Web-based magazine.
Gives "Bullets" of EBM for the general practitioner. Published
monthly by Oxford.
The guide has been produced by Arbor
Communications Pty Ltd. The editor in chief is Dr. Tony Helman. Dr. Helman is a
physician and nutritionist based in Australia. Dr. Helman has designed
this site for use by health professionals, and specifically family physicians.
He uses evidence-based reviews extensively on this site. Excellent for looking
up vitamin information and the latest in nutrition research.
This site is limited in scope, but has some very
nice Emergency Room topic coverage. Systematic Reviews and POEM-like analyses.
A comprehensive database of evidence-based clinical
practice guidelines and related documents produced by the Agency for Health
Care Policy and Research in partnership with the American Medical Association
and the American Association of Health Plans. This actually searches on
pre-selected sites that have published guidelines on many topics. Sites
referred to include everything from the National Cancer Institute to various
medical specialty sites.
The report of the U.S. Preventive Services Task
Force. "Widely regarded as the premier reference source on the
effectiveness of clinical preventive services-screening tests for early
detection of disease, immunizations to prevent infections, and counseling for
risk reduction."
This has all of the articles available through
PubMed, but uses a clinical filter to help answer questions of interest to a
clinician and to filter out irrelevant articles. The site uses the following
search categories: therapy, diagnosis, etiology, and prognosis. At the top of
the search page, you can click on
this table to
find out what the filter actually does. Make sure that you use the "See
related articles" button, which finds articles similar to one you may
like.
This site is an excellent resource for those of
you who have a PocketPC or are looking to get one. InfoRetriever is the best
(and only) EBM resource for a handheld. The information is also available by
web for those who pay the fee. Information at your fingertips include Cochrane
reviews, JFP POEMs, Guide to Clinical Preventive services, Medical Calculators
and Diagnostic decision aids and calculators, as well as the 5 Minute Clinical
Consult!