Gender-Specific Changes Since 1900 in the Season-of-Birth Effect in Schizophrenia

1995 ◽  
Vol 167 (4) ◽  
pp. 469-472 ◽  
Author(s):  
John M. Eagles ◽  
David Hunter ◽  
John R. Geddes

BackgroundIt was hypothesised that the size of the season-of-birth effect may have decreased in tandem with the apparent decline in the incidence of schizophrenia.MethodThrough the Aberdeen Psychiatric Case Register, subjects were identified who had been diagnosed as schizophrenic and had been born between 1900 and 1969. The ratio of winter/spring to summer/autumn births was compared across the seven decades for both sexes together, for men, and for women.ResultsFor the 1935 men, but not for the 1620 women, there was a highly significant increase (P = 0.0009) in season-of-birth effect.ConclusionNon-seasonal factors have contributed to a declining incidence of schizophrenia in both sexes. ‘Seasonal’ factors to which female foetuses are more susceptible than male foetuses (such as infection or malnutrition) have also decreased in frequency, severity, or both, but this has not happened with factors affecting males, leading to an increase of their season-of-birth effect.

1996 ◽  
Vol 168 (6) ◽  
pp. 772-779 ◽  
Author(s):  
D. N. Baxter

BackgroundSeveral studies, mainly non-UK based, have reported higher than expected mortality for individuals with mental illness. This investigation in Salford (England) was undertaken to determine local experiences.MethodAn historical cohort design was employed with record linkage to determine status at study end: maximum follow-up was 18 years. All 6952 individuals with schizophrenia, neuroses, affective or personality disorders, enrolled on the psychiatric case register between 1 January 1968 and 31 December 1975 were recruited: there were 199 exclusions. Death was the study end-point.ResultsObserved mortality was 65% higher than expected and elevated throughout the whole of follow-up. Mortality was highest in younger ages, females and subjects born locally. Circulatory disorders, injury and poisoning each caused approximately one-third of the excess deaths.ConclusionsDocumenting mortality risk has important applications for prioritisation, resource allocation, developing control programmes, evaluating service effectiveness, disease forecasting and future research.


2009 ◽  
Vol 195 (3) ◽  
pp. 191-193 ◽  
Author(s):  
Gayan Perera ◽  
Mishael Soremekun ◽  
Gerome Breen ◽  
Robert Stewart

SummaryCase registers have been fundamental to mental health research from the early asylum studies onwards. Having declined in popularity over the past 20 years, they are likely to see a resurgence of interest with the advent of electronic clinical records and the technological capacity to derive anonymised databases from these.


1979 ◽  
Vol 9 (3) ◽  
pp. 567-572 ◽  
Author(s):  
T. Fryers

SynopsisData derived from a psychiatric case-register are presented on the accumulation of new long-stay cases in Salford from 1967 to 1976. The analysis supports the general decline reported in an earlier shorter-term study except for the over 65s, where the trend was reversed. The implications of the findings are discussed.


1982 ◽  
Vol 17 (3) ◽  
pp. 125-131 ◽  
Author(s):  
Eugenio Torre ◽  
Alessandra Marinoni ◽  
Giorgio Allegri

Sign in / Sign up

Export Citation Format

Share Document