Age at onset of schizophrenia: gender differences and influence of temporal socioeconomic change |
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Authors: | Takahashi S Matsuura M Tanabe E Yara K Nonaka K Fukura Y Kikuchi M Kojima T |
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Institution: | Nihon University School of Medicine, Department of Neuropsychiatry, Tokyo, Japan. sakae@med.nihon-u.ac.jp |
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Abstract: | This study was undertaken to examine whether males develop schizophrenia at a younger age than females, and whether temporal socioeconomic change affects the age at onset of schizophrenia. The subjects were 848 ICD-9 schizophrenics who were admitted to Nihon University Hospital, Tokyo, Japan, during the period of 1955-64 (n = 468 (214 males and 254 females), group A) or during the period of 1982-91 (n = 380 (220 males and 160 females). group B). Schizophrenic males showed an earlier age at onset than schizophrenic females. However, the mean age at onset of schizophrenia did not differ significantly between group A and group B. These results indicate that the gender difference in age at onset of schizophrenia has not been influenced by temporal socioeconomic change. |
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Keywords: | age at onset gender difference schizophrenia temporal socioeconomic change |
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