Prevalence, correlates, comorbidities, and suicidal tendencies of premenstrual dysphoric disorder in a nationwide sample of Korean women

We examined the prevalence, correlates, comorbidities, and suicidal tendencies of premenstrual dysphoric disorder (PMDD) according
to the DSM-IV criteria in a nationwide sample of Korean women.

A total of 2,499 women aged 18–64 years participated in this study. Diagnostic assessments were based on the Korean version
of the Composite International Diagnostic Interview (CIDI) 2.1 and its 12-month PMDD diagnostic module, which were administered
by lay interviewers. The frequencies of DSM-IV psychiatric disorders, insomnia, and suicidal tendency were analyzed among
PMDD cases and compared with non-PMDD cases, and both odds ratios and significance levels were calculated.

The 12-month prevalence rate of DSM-IV-diagnosed PMDD was 2.4 %. Among subjects with PMDD, 59.3 % had at least one psychiatric
illness; in comparison, the control frequency was 21.8 %. Associations between PMDD and alcohol abuse/dependence, major depressive
disorder, post-traumatic stress disorder, social phobia, specific phobia, somatoform disorder, insomnia, and suicidality were
overwhelmingly positive and significant (p < 0.05), after controlling for age. Physical illness and being underweight were associated with increased risks of PMDD (p < 0.05).

PMDD was prevalent in the nationwide sample of Korean women and was frequently associated with other psychiatric disorders,
insomnia, and suicidality, suggesting the need to detect and treat women who experience PMDD.