title: Understanding interactions.
authors.affiliation: a Department of Biostatistics , UNC Gillings School of Global Public Health , Chapel Hill , NC , USA.
authors.forename: Shrikant I
authors.initials: SI
authors.lastname: Bangdiwala
mesh_terms: D000059:Accidents / Q000706:statistics & numerical data*; D006801:Humans; D016017:Odds Ratio; D012307:Risk Factors; D013223:Statistics as Topic / Q000379:methods*; D014947:Wounds and Injuries / Q000453:epidemiology*