Abstract
The incidence of psychiatric disorders and depressive symptoms was examined in a cohort of American men and women who spent an austral winter at two different research stations in Antarctica to determine whether extended residence of nonindigenous inhabitants in a polar region is associated with psychiatric morbidity. Debriefings interviews with 220 men and 93 women were conducted by 3 psychiatrists and 1 clinical psychologist at McMurdo Station and South Pole Station at the end of the austral winter between 1994 and 1997. Crewmembers were assigned a DSM-IV diagnosis if they satisfied diagnostic criteria. Debriefed crewmembers also completed the Structured Interview Guide for the Hamilton Depression Inventory-Seasonal Affective Disorders version (SIGH-SAD). Thirty-nine (12.5%) crewmembers presented with symptoms that met the criteria for one or more DSM-IV disorders. After weighting the prevalence to account for the low participation rate of civilian personnel, the incidence of DSM-IV disorders was 5.2%. Mood disorders were the most common diagnoses, accounting for 30.2% of all diagnoses, followed by adjustment disorders (27.9%), sleep-related disorders (20.9%), personality disorders (11.6%), and substance-related disorders (9....Continue Reading
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