Integrated Care in Psychotic Disorders With Severe Mental Illness

Inclusion criteria Inclusion criteria for trial participation are identical with the IC model participation criteria and are part of IC contracts with the health insurances. Both, treatment and trial participation were voluntary and needed separate informed consent. Following inclusion criteria will be applied: * Member of one of the following health insurances: DAK Gesundheit, HEK, IKK Classic, AOK Rheinland/Hamburg (Germany); * Diagnosis of a schizophrenia spectrum disorder (i.e. schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, or psychotic disorder NOS), bipolar disorder, severe major depression with psychotic features, and substance-induced psychotic disorder, all assessed according to DSM-IV with the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I); * Present confinement for hospitalization because of an acute illness state as assessed by a psychiatrists; * Presence of a certain severity of illness as assessed with the Brief Psychiatric Rating Scale (BPRS; 24-item version) with a) BPRS total score \> 40 points and b) fulfillment of one of the following sub syndromes: ≥ 6 points on item 10 (hallucinations), ≥ 6 points on item 11 (unusual thought content), ≥ 6 points on item 15 (conceptual disorganization), ≥ 10 points on items 3 plus 4 (depressive-suicidal syndrome), ≥ 6 points on item 4 (suicidality), ≥ 15 points on items 8, 9 plus 21 (manic syndrome), ≥ 15 points on items 6, 12 plus 20 (disruptive behavior synd…