Journal
INTERNATIONAL JOURNAL OF PSYCHIATRY IN CLINICAL PRACTICE
Volume 22, Issue 3, Pages 170-176Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13651501.2017.1391292
Keywords
Schizophrenia; maternal age; paternal age; parental age
Categories
Funding
- Hungarian Academy of Sciences
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Objective: Advanced parental age might constitute a generic risk factor for mental and somatic disorders. The current study tested whether this concerns also patients with schizophrenia.Methods: A total of 231 schizophrenic, 56 other severe mental disorders patients and 204 controls were diagnosed according to DSM-IV-TR. Data were tested with ANOVA models including relative risk and odds ratios.Results: Patients with schizophrenia manifested higher paternal (32.556.35 vs. 29.42 +/- 6.07, p<.001) and maternal age (27.66 +/- 5.57 vs. 25.46 +/- 4.52, p<.001). Patients with other mental disorders had higher paternal (33.29 +/- 8.35; p=.001) but not maternal age (26.69 +/- 5.89; p=.296) compared to controls. There was no difference between the two patient groups concerning either paternal or maternal age (p>.05). There seems to be a higher risk for the development of schizophrenia in offspring with paternal age above 25 years and maternal age above 22 years at delivery.Conclusions: The current study provides further support for the suggestion that advanced paternal age constitutes a risk factor (in a non-dose dependent and gender-independent way) for the development of schizophrenia but also for other mental disorders. In contrast, advanced maternal age characterises schizophrenia specifically. The higher risk is evident after 25 years of paternal and 22 years of maternal age, respectively.
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