Although the cause for RA is unknown, several risk factors have been identified
for the development of the condition. The greatest risk factor for acquiring RA
is being a female. Women are 2.5 to 3 times more likely to be diagnosed with RA
than men .
Additional risk factors include a history of receiving a blood
transfusion, being between the ages of 25-45, being Caucasian or Native American,
obesity, and a family positive history of the disease .
Blood Transfusion Recipient
Caucasian or Native American Descent
Incidence and Prevalence
The incidence of RA is approximately 70 new cases per
100,000 individuals in the United States (US) a year . According to the Center for Disease Control (2008,
¶ 1 ) the prevalence of RA is 46.4 million adults and approximately 294,000 children,
with women representing two-thirds of the cases. . To extrapolate the
impact arthritis had, the CDC collected and analyzed data using the Behavioral Risk
Factor Surveillance System (BRFSS) survey to ascertain the amount of arthritis-attributable
work limitations (AAWL) by state.