title: Confounding in database pharmacoepidemiology studies.
authors.forename: Joseph A C
authors.initials: JA
authors.lastname: Delaney
authors.forename: Lucie
authors.initials: L
authors.lastname: Opatrny
authors.forename: James M
authors.initials: JM
authors.lastname: Brophy
authors.forename: Samy
authors.initials: S
authors.lastname: Suissa
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects; D000925:Anticoagulants / Q000009:adverse effects; D016022:Case-Control Studies; D015986:Confounding Factors, Epidemiologic; D064420:Drug-Related Side Effects and Adverse Reactions / Q000453:epidemiology*; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced / Q000188:drug therapy / Q000453:epidemiology; D006801:Humans; D017891:Pharmacoepidemiology / Q000379:methods*; D012307:Risk Factors; D006113:United Kingdom / Q000453:epidemiology; D014859:Warfarin / Q000009:adverse effects
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000925:Anticoagulants; D014859:Warfarin