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Published in: Social Psychiatry and Psychiatric Epidemiology 2/2016

Open Access 01-02-2016 | Original Paper

Biological and psychosocial risk factors for psychotic major depression

Authors: M. Heslin, R. Desai, J. M. Lappin, K. Donoghue, B. Lomas, U. Reininghaus, A. Onyejiaka, T. Croudace, P. B. Jones, R. M. Murray, P. Fearon, G. A. Doody, P. Dazzan, H. L. Fisher, A. Demjaha, T. Craig, C. Morgan

Published in: Social Psychiatry and Psychiatric Epidemiology | Issue 2/2016

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Abstract

Aims

Few studies have investigated risk factors for psychotic major depression (PMD). We aimed to investigate the biological and psychosocial risk factors associated with PMD compared with other psychotic disorders.

Methods

Based on the aetiology and ethnicity in schizophrenia and other psychoses (ÆSOP) study, we used a case–control study to identify and recruit, at baseline and 10-year follow-up, all first episode cases of psychosis, presenting for the first time to specialist mental health services in defined catchment areas in the UK. Population-based controls were recruited from the same areas. Data were collected on: sociodemographics; social isolation; childhood adversity; life events; minor physical anomalies; and neurological soft signs.

Results

Living alone (aOR = 2.26, CI = 1.21–4.23), basic level qualification (aOR = 2.89, CI = 1.08–7.74), being unemployed (aOR = 2.12, CI = 1.13–3.96), having contact with friends less than monthly (aOR = 4.24, CI = 1.62–11.14), having no close confidants (aOR = 4.71, CI = 2.08–10.68), having experienced childhood adversity (aOR = 2.57, CI = 1.02–6.44), family history of mental illness (aOR = 10.68, CI = 5.06–22.52), family history of psychosis (aOR = 12.85, CI = 5.24–31.51), and having more neurological soft signs (aOR = 1.15, CI = 1.07–1.24) were all associated with a follow-up diagnosis of PMD and schizophrenia. Few variables associated with PMD were also associated with a diagnosis of bipolar disorder. Minor physical anomalies were associated with a follow-up diagnosis of schizophrenia and bipolar disorder, but not PMD.

Conclusions

Risk factors associated with PMD appear to overlap with those for schizophrenia, but less so for bipolar disorder. Future work on the differential aetiology of PMD, from other psychoses is needed to find the ‘specifier’ between PMD and other psychoses. Future research on aetiology in PMD, and perhaps other psychoses, should account for diagnostic change.
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Metadata
Title
Biological and psychosocial risk factors for psychotic major depression
Authors
M. Heslin
R. Desai
J. M. Lappin
K. Donoghue
B. Lomas
U. Reininghaus
A. Onyejiaka
T. Croudace
P. B. Jones
R. M. Murray
P. Fearon
G. A. Doody
P. Dazzan
H. L. Fisher
A. Demjaha
T. Craig
C. Morgan
Publication date
01-02-2016
Publisher
Springer Berlin Heidelberg
Published in
Social Psychiatry and Psychiatric Epidemiology / Issue 2/2016
Print ISSN: 0933-7954
Electronic ISSN: 1433-9285
DOI
https://doi.org/10.1007/s00127-015-1131-1

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