title: Very small P values.
authors.affiliation: University of Rochester, Rochester, New York.
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Knapp
authors.affiliation: Georgia State University, Atlanta.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Hayat
mesh_terms: D001714:Bipolar Disorder / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D011618:Psychotic Disorders / Q000453:epidemiology*; D012559:Schizophrenia / Q000453:epidemiology*; D019966:Substance-Related Disorders / Q000453:epidemiology*