title: Index event bias as an explanation for the paradoxes of recurrence risk research.
authors.affiliation: Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, 800 Washington St, Box 63, Boston, MA 02111, USA.
authors.forename: Issa J
authors.initials: IJ
authors.lastname: Dahabreh
authors.forename: David M
authors.initials: DM
authors.lastname: Kent
mesh_terms: D015982:Bias; D015984:Causality; D054092:Foramen Ovale, Patent / Q000150:complications; D006801:Humans; D018579:Patient Selection; D012008:Recurrence; D018570:Risk Assessment; D012307:Risk Factors; D020521:Stroke / Q000150:complications / Q000453:epidemiology