Morbidity in 303 first-episode bipolar I disorder patients. Academic Article uri icon

start page

  • 264

end page

  • 270

abstract

  • To test the hypotheses that: (i) depressive-dysthymic-dysphoric (D-type) morbidity is more prevalent than manic-hypomanic-psychotic (M-type) morbidity even from first episodes of bipolar I disorder (BPD-I) and despite treatment; (ii) initial presentations predict later morbidity; (iii) morbidity varies internationally; and (iv) early and later morbidity are similar.We followed SCID-based, DSM-IV BPD-I patients (n = 303) systematically and prospectively for two years to estimate the percent of weeks in specific morbid states from first lifetime major episodes.Total morbidity accounted for 44% of the first two years, and D-type exceeded M-type illnesses by 2.1-fold (30%/14%) among morbidities ranking: mixed states (major + minor) >or= dysthymia >or= mania >or= major depression > hypomania > psychosis. In 164 cases, morbidities at 0.5-2.5 and 2.5-4.5 years were very similar. Depressive or mixed initial episodes predicted a 3.6-fold excess of D-type morbidity, and initial M-type episodes predicted a 7.1-fold excess of M-type morbidity over two years. Morbidity in European (EU) sites was nearly half that in the U.S., and 22% greater overall among men than women. In five comparable studies, illness accounted for 54% of follow-up time, and the ratio of D/M morbidity averaged 3.0.In accord with four midcourse studies, morbidity from BPD-I onset, despite treatment by community standards, averaged 44%, was 68% D-type morbidity, and was strongly predicted by first-episode polarity. Lower morbidity in EU than U.S. sites may reflect differences in healthcare or social systems.

date/time value

  • May 2010

Digital Object Identifier (DOI)

  • 10.1111/j.1399-5618.2010.00812.x

PubMed Identifier

  • 20565433

volume

  • 12

number

  • 3

keywords

  • Adolescent
  • Adult
  • Bipolar Disorder
  • Cross-Cultural Comparison
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Morbidity
  • Predictive Value of Tests
  • Psychiatric Status Rating Scales
  • Young Adult