Response of Psychiatric Outpatients to the Great East Japan Earthquake

Objective: Reports have described how hospitalized psychiatric patients respond to disasters; however, few reports have described the response to disaster among psychiatric outpatients, who have relatively mild disease in comparison with hospitalized, severely ill psychiatric patients. Here the investigators have analyzed the response to disaster among this under-studied population.

Method: The Great East Japan Earthquake on March 11, 2011, was a catastrophic disaster. The investigators studied psychiatric change among a population of psychiatric outpatients in Tochigi prefecture, located ~160 km (~100 miles) southeast of the Fukushima nuclear power plant, in an area that suffered moderate damage from the earthquake. A total of 328 psychiatric outpatients were enrolled and were grouped into the diagnostic categories F2 (schizophrenic, schizotypal, and delusional disorders), F3 (affective disorders), and F4 (neurotic, stress-related, and somatoform disorders). All diagnoses were made using International Classification of Diseases (ICD) 10 criteria. Changes in symptoms were measured as a change in psychotropic medication after the disaster.