The CCP antibody test helps to diagnose RA and can be useful in identifying people with a more rapidly erosive form of the disease. RA is a chronic, systemic autoimmune disease that causes inflammation, pain, stiffness, and destructive changes in the hands, feet, and other joints throughout the body.
As you can see from the map above, most of the Illinois population is based in the North East of the state. Chicago, home to 2,695,598 people, remains the largest city in Illinois. It dwarfs the state's other cities â the next largest is Aurora, with 197,899 people.
Census data released Thursday suggest the root of the problem is in the Chicago metropolitan area, which in 2015 saw its first population decline since at least 1990. Chicago's metropolitan statistical area, defined by the U.S. Census Bureau, includes the city and suburbs and extends into Wisconsin and Indiana. The Chicago area lost an estimated 6,263 residents in 2015 â the greatest loss of any metropolitan area in the country. That puts the region's population at 9.5 million.