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.
Estimated times (A) by age at PD diagnosis in the Penn cohort, (B) by sex in the Penn cohort, and (C) by education level in the Penn cohort (with 95% pointwise confidence limits). PD = Parkinson disease; Penn = University of Pennsylvania.
