The Season of Birth of Schizophrenics and Schizoaffectives

Aschauer, Harald; Meszaros, K.; Willinger, Ulrike; Reiter, E.; Heiden, A.; Lenzinger, E.; Beran, H.; Resinger, E.

doi:10.1159/000284887

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…Our definition of schizophrenia included schizophreniform and schizoaffective disorders. However, previous studies have found similar seasonal variation in schizophrenia and schizoaffective disorder (Aschauer et al 1994 ;Torrey et al 1996). Thus, the broad definition is unlikely to be a major confounding factor.…”

Section: Limitationsmentioning

confidence: 78%

Decreasing seasonal variation of births in schizophrenia

et al. 2000

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Section: Limitationsmentioning

confidence: 78%

Decreasing seasonal variation of births in schizophrenia

et al. 2000

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“…In the current literature, season of birth has so far been at the center o f interest in schizophren ic psychoses [12,[24][25][26], However, seasonality has been only tentatively considered to have a course-determining effect on schizophrenia. With respect to the manifestation seasonality o f subtypes, to our knowledge no studies have been carried out as yet.…”

Section: Discussionmentioning

confidence: 99%

Influence of Season on Manifestation of Schizophrenic Subtypes

Sperling

Barocka²,

Kalb³

et al. 1997

Psychopathology

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In the modern classification systems ICD-10 and DSM-III-R, the term seasonality has been given a separate significance in the diagnostic categorization of affective disorders. Its definition is oriented not merely to the increased seasonal prevalence in the autumn and winter months, but also to symptoms that do not occur in nonseasonal attacks. To date, research work on seasonality in schizophrenia has concentrated on birth seasonality, while no results based on large populations of patients have yet become available on the manifestation seasonality of schizophrenic subtypes. Within the framework of a retrospective study carried out in the period between 1983 and 1995, involving 2,119 patients suffering from recurrent attacks of schizophrenia, seasonal manifestations were recorded in accordance with the criteria defined in DSM-III-R. It was found that the two subtypes of paranoid hallucinatory and schizoaffective psychoses met the criterion of seasonality significantly more frequently than did the subtypes disorganized and catatonic disorders. In addition, seasonal courses within the groups just mentioned clearly differed from the nonseasonal forms in terms of their symptomatology.

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“…Figure 1 displays the recruitment of the study sample. The study is based on a computer list of subjects (n=729), born between 1960 and 1971, who had been hospitalized at the University Hospital for Psychiatry, Vienna and had received a clinical diagnosis of schizophrenia (295.0±6, 295.8±9), schizoaffective disorder (295.7) or affective disorder (296.0±9) according to ICD-9 criteria assigned at discharge from the hospital between 1978 and 1992 (14). Of those patients, 40 had been seen at the University Hospital for Child and Adolescent Neuropsychiatry, Vienna, prior to their ®rst hospital admission in adulthood and received IQ assessment during this initial presentation.…”

Section: Subjectsmentioning

confidence: 99%