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Birth order in obsessive-compulsive disorder.
Psychiatry Research
|August 1, 1987
Summary
This study found no significant link between birth order and obsessive-compulsive disorder (OCD). While earlier-born children appeared more common, this was not consistent across family sizes and not a significant factor in OCD development.
Area of Science:
- Psychiatry
- Genetics
- Developmental Psychology
Background:
- Obsessive-compulsive disorder (OCD) is a complex mental health condition.
- Previous research has explored various etiological factors, including potential influences of family structure.
Purpose of the Study:
- To investigate the relationship between birth order, family size, and the occurrence of obsessive-compulsive disorder (OCD).
Main Methods:
- Retrospective analysis of 392 diagnosed cases of OCD from 1975-1984.
- Utilized Slater's index to assess birth order distribution.
- Examined data stratified by family size, age of onset, and sex.
Main Results:
- A nonsignificant excess of earlier-born children was observed in the overall OCD sample.
- This trend was not uniform across different family sizes.
- No significant overrepresentation of first-born or only children was found.
- The observed pattern was not attributable to age of onset or sex.
Conclusions:
- Birth order and family size do not appear to be significant risk factors for developing obsessive-compulsive disorder (OCD).
- The study suggests that familial and genetic factors may play a more prominent role than birth position in OCD etiology.