Table 1.
RR (95% CI) of developing MS by self-reported outdoor exposure (in summer and winter and direct sun) combined with the ambient UV-B at different ages
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.