The top 10 topic areas of interest of registered users and the top 10 topic areas of interest of visitors of http:// www.health-evidence.ca, as well as the availability of review evidence by methodological quality, are identified in Table 1 . The top areas of interest and the total number of reviews available included: addiction/substance use (355), adolescent health (367), adult health (552), child health (409), chronic diseases (702), communicable disease/infection (241), healthy communities (134), injury prevention/safety (296), mental health (336), nutrition (426), parenting (287), physical activity (353), reproductive health (240), and social determinants of health (66).