title: Statistical analysis of 2 x 2 tables.
authors.affiliation: Division of Biostatistics, College of Medicine, University of Iowa, Iowa City.
authors.forename: L A
authors.initials: LA
authors.lastname: McNutt
authors.forename: R F
authors.initials: RF
authors.lastname: Woolson
mesh_terms: D003428:Cross Infection / Q000209:etiology; D006801:Humans; D011446:Prospective Studies; D012107:Research Design; D012189:Retrospective Studies; D012307:Risk Factors; D013223:Statistics as Topic