title: The mathematical case against unipolar mania.
abstract: A mathematical model is developed based on several assumptions to predict frequency of admission for apparent unipolar mania given that such patients have the same illness as bipolars. The model is compared with data from previous studies of unipolar mania and with data from the author's own study of 77 unipolar manic patients. The observations generally supported the model. It is concluded that the DSM III convention of classifying unipolar manics under the heading "Bipolar disorder" is upheld.
mesh_terms: D000341:Affective Disorders, Psychotic / Q000175:diagnosis*; D001714:Bipolar Disorder / Q000175:diagnosis* / Q000523:psychology; D003866:Depressive Disorder / Q000175:diagnosis / Q000523:psychology; D003937:Diagnosis, Differential; D006778:Hospitals, Psychiatric; D006801:Humans; D008433:Mathematics; D008960:Models, Psychological; D011336:Probability