Number of health web sites that met 3 or more criteria for disclosing information that can be used to assess information reliability.
Number of health web sites included in the sample.
From the 2009 National Quality Health Website Survey:
Health-related Web sites that met 3 or more of the following evaluation criteria:
The National Quality Health Website Survey evaluates a sample of health web sites, representative of most- and least- visited websites (list of eligible "Health and Medical" -related web sites generated by Hitwise).