Studiet undersøger kønsforskelle i debutalderen og forekomsten af første episode af mani og bipolar lidelse i London over 35 år. Resultaterne viser, at mænd har tidligere debut, mens kvinder har højere forekomst af bipolar I lidelse i voksenlivet. Barndom med antisocial adfærd er forbundet med tidlig debut hos mænd. Dette indikerer, at der kan være en undergruppe med tidlig debut af bipolar lidelse hos mænd.
Titel på undersøgelse:
Gender differences in incidence and age at onset of mania and bipolar disorder over a 35-year period in Camberwell, England.
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Hele abstrakt på originalsprog:
This study examines gender differences in the age at onset and incidence of first-episode mania and bipolar disorder over 35 years (1965-1999) in southeast London. Using data from all adult cases of first-episode psychosis, mania, or hypomania in Camberwell, diagnoses were generated with the Operational Checklist for Psychotic Disorders. Incidence rates and rate ratios for DSM-IV bipolar I disorder and first manic episodes were calculated by gender and 10-year age-at-onset categories. Results showed men had a significantly earlier onset of mania and bipolar disorder, with childhood antisocial behavior strongly linked to this early onset after multivariate analysis. Women exhibited higher incidence rates of bipolar I disorder across adulthood, except in early life (ages 16-25), though differences within specific age bands were not statistically significant. The findings suggest an early-onset subgroup in men tied to antisocial behavior, highlighting distinct gender patterns in bipolar disorder onset and progression.