title: How to read a funnel plot in a meta-analysis.
authors.affiliation: Institute for Medical and Biomedical Education, St George's, University of London, London, UK p.sedgwick@sgul.ac.uk.
authors.forename: Philip
authors.initials: P
authors.lastname: Sedgwick
authors.affiliation: Department of Primary Care and Population Health and Priment Clinical Trials Unit, University College London, London.
authors.forename: Louise
authors.initials: L
authors.lastname: Marston
mesh_terms: D001795:Blood Pressure Determination; D002986:Clinical Trials as Topic; D006801:Humans; D015201:Meta-Analysis as Topic