title: Stratification for spontaneous report databases.
authors.forename: Johan
authors.initials: J
authors.lastname: Hopstadius
authors.forename: G Niklas
authors.initials: GN
authors.lastname: Norén
authors.forename: Andrew
authors.initials: A
authors.lastname: Bate
authors.forename: I Ralph
authors.initials: IR
authors.lastname: Edwards
mesh_terms: D016907:Adverse Drug Reaction Reporting Systems / Q000458:organization & administration*; D001499:Bayes Theorem; D015984:Causality; D016208:Databases, Factual / Q000145:classification*; D006801:Humans; D016017:Odds Ratio