Assessing health-evidence.ca user and visitor areas of interest Registered user areas of interest were assessed by querying the health-evidence.ca registered user database and looking at the areas of interest identified by all users who registered up to December 31, 2010. Data were aggregated by topic area. Registered user data is provided voluntarily by users and aggregation ensures individual data remain anonymous. Topic areas of interest were ranked from highest to lowest rates of user interest. The top 10 areas of interest were summed to generate the denominator: total user interest in the top 10 topic areas.