Physical Therapy: Clinical Conditions I: Evaluating Health Information

Commercial sites may represent a specific company or be sponsored by a company using the web for commercial reasons—to sell products.

At the same time, many commercial websites have valuable and credible information. Many hospitals have .com in their address.

The site should fully disclose the sponsor of the site, including the identities of commercial and noncommercial organizations that have contributed funding, services, or material to the site.

Source: The Medical Library Association's A Users Guide to Finding and Evaluating Health Information on the Web 

1. Sponsorship, Good or Bad Example: Ehow

• Can you easily identify the site sponsor? Sponsorship is important because it helps establish the site as respected and dependable. Does the site list advisory board members or consultants? This may give you further insights on the credibility of information published on the site.

• The web address itself can provide additional information about the nature of the site and the sponsor's intent.
  • A government agency has .gov in the address.
  • An educational institution is indicated by .edu in the address.
  • A professional organization such as a scientific or research society will be identified as .org. For example, the American Cancer Society's website is http://www.cancer.org/.
  • Commercial sites identified by .com will most often identify the sponsor as a company, for example Merck & Co., the pharmaceutical firm.

2. Currency, Good or Bad Example: Genetics Home Reference

• The site should be updated frequently. Health information changes constantly as new information is learned about diseases and treatments through research and patient care. Websites should reflect the most up-to-date information.
• The website should be consistently available, with the date of the latest revision clearly posted. This usually appears at the bottom or the top of the page.

3. Factual information, Good or Bad Example: Center for Disease Control & Prevention

• Information should be presented in a clear manner. It should be factual (not opinion) and capable of being verified from a primary information source such as the professional literature, abstracts, or links to other web pages.
• Information represented as an opinion should be clearly stated and the source should be identified as a qualified professional or organization.

4. Audience, Good or Bad Example: Doctor Yourself

• The website should clearly state whether the information is intended for the consumer or the health professional.
• Many health information websites have two different areas - one for consumers, one for professionals. The design of the site should make selection of one area over the other clear to the user.

Source: The Medical Library Association's A Users Guide to Finding and Evaluating Health Information on the Web