title: Is the study worth doing?
authors.affiliation: Department of Public Health and Primary Care, University of Oxford, Radcliffe Infirmary, UK.
authors.forename: L M
authors.initials: LM
authors.lastname: Carpenter
mesh_terms: D003625:Data Collection; D006801:Humans; D007255:Information Services / Q000706:statistics & numerical data; D011336:Probability; D012106:Research; D012107:Research Design