title: Measuring risk: how, when and why?
authors.affiliation: Department of General Practice and Primary Care, University of Aberdeen, Aberdeen, UK.
authors.forename: Julie A
authors.initials: JA
authors.lastname: Simpson
authors.forename: Jill
authors.initials: J
authors.lastname: Mollison
authors.forename: Philip C
authors.initials: PC
authors.lastname: Hannaford
mesh_terms: D016022:Case-Control Studies; D002986:Clinical Trials as Topic; D015331:Cohort Studies; D003627:Data Interpretation, Statistical; D006801:Humans; D034121:Reproductive Health Services; D012107:Research Design; D012306:Risk; D018570:Risk Assessment / Q000379:methods*