title: The chi-square test.
authors.affiliation: Assistant professor, Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine/Medical Faculty, University of Bern, Bern, Switzerland; private practice, Corfu, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Pandis
mesh_terms: D016009:Chi-Square Distribution; D003627:Data Interpretation, Statistical; D015233:Models, Statistical