Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Approximated cumulative incidence to age 50 of MDD, Bipolar I disorder, and Bipolar II disorder in the Zurich Cohort Study, 1979–2008. Estimate in 1979 represents past-year prevalence; subsequent estimates incorporate new past-year cases at each wave.
