title: The Chi square test: an introduction.
abstract: The Chi square test is a statistical test which measures the association between two categorical variables. A working knowledge of tests of this nature are important for the chiropractor and osteopath in order to be able to critically appraise the literature.
authors.affiliation: Department of Public Health and Community Medicine, The University of Melbourne, Parkville, Victoria, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Ugoni
authors.forename: B F
authors.initials: BF
authors.lastname: Walker