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.
Number of men receiving a first award of disability pension 1991-2008, and among them the proportions of men obtaining cognitive ability scores 1-4 and 5-9 on the stanine scale. In the full cohort, 33% scored 1-4 on the cognitive ability test.
