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.
Relative risks of developing rheumatoid arthritis (RA), overall and by subtype, for first-degree relatives of probands with schizophrenia. For comparison reasons, relative risks of receiving a subsequent diagnosis of ankylosing spondylitis (AS) and osteoarthritis (OA) are also shown. All data are from a Swedish nationwide population-based cohort with earliest start of follow-up in 1997. *Events among exposed/unexposed.
