A new source of data for public health surveillance: Facebook likes - PubMed
Facebook likes provide estimates for examined health outcomes and health behaviors that are comparable to those obtained from the BRFSS. Online sources may provide more reliable, timely, and cost-effective county-level data than that obtainable from traditional public health surveillance systems as …
20 Apr 2015 ... Facebook likes provide estimates for examined health outcomes and health behaviors that are comparable to those obtained from the BRFSS.