Can analyses of electronic patient records be independently and externally validated? Study 2—the effect of β-adrenoceptor blocker therapy on cancer survival: a retrospective cohort study - Springate, David A; Ashcroft, Darren M; Kontopantelis, Evangelos; Doran, Tim; Ryan, Ronan; Reeves, David (BMJ open, 2015)
Keywords: Adrenergic beta-Antagonists - administration & dosage; Antihypertensive Agents - administration & dosage; Cancer; Cardiovascular disease; Clinical medicine; Databases, Factual; Electronic Health Records; General practice / Family practice; Humans; Methods; Mortality; Neoplasms - drug therapy; Neoplasms - mortality; Primary Health Care - statistics & numerical data; Retrospective Studies; Sensitivity analysis; Studies; United Kingdom - epidemiology; Validity; United Kingdom; United Kingdom--UK; ONCOLOGY; STATISTICS & RESEARCH METHODS; PRIMARY CARE