The Reasons for Antipsychotic Discontinuation Questionnaire (RAD-Q) was designed to assess clinicians’ perceptions of reasons for antipsychotic discontinuation or continuation. The current study examined psychometric properties of this instrument and patterns of antipsychotic discontinuation. The sample of 121 patients (81 discontinuation, 40 continuation) with schizophrenia or schizoaffective disorder was 66.9% male, with a mean age of 41.6 years.

Matza LS, Phillips GA, Revicki DA, Ascher-Svanum H, Malley KG, Palsgrove AC, Faries DE, Stauffer V, Kinon BJ, Awad AG, Keefe RSE, Naber D. Validation of a clinician questionnaire to assess reasons for antipsychotic discontinuation and continuation among patients with schizophrenia.  Psychiatry Research, 2012; 200(2-3): 835-842.