From the Journal of Rheumatology:
The majority of mortality studies published over the last 15 years have identified excess mortality in rheumatoid arthritis (RA) cohorts compared to that in the general population (Table 11-17), and many have highlighted excess mortality from cardiovascular causes. Methodology and study design seem to affect the magnitude of the mortality rates, with community-based and inception-cohort followup studies being associated with smaller increases in standardized mortality ratios (SMR) than studies of established prevalent RA cohorts. In this issue of The Journal, Gonzalez, et al explore mortality rates in a population-based cohort of RA patients from Rochester, Minnesota, USA, stratified by rheumatoid factor (RF) status17. They report modest increases in SMR for RA patients who were RF-positive, but found that patients with persistently RF-negative RA had mortality rates similar to those in the general population. Other studies have reported similar findings, with excess mortality being observed only in the RF-positive patients in both hospital-based2 and community-based cohorts5,18,19.
http://www.jrheum.com/subscribers/08/06/945.html
*whew* .. RF negative here..