The prevalence of complementary and alternative medicine use among the general population: a systematic review of the literature

Objective: To conduct a systematic review of published research investigating the prevalence of complementary and alternative medicine (CAM) use in the general population. Design: A protocol was developed for a systematic review of survey literature identified using two bibliographic databases and citation tracking. The protocol specified criteria for: 1) database searches; 2) selection of studies for review; and 3) description of methodological...