Rheumatoid arthritis A. clinical and laboratory manifestations

Christopher V. Tehlirian, Joan M. Bathon

Research output: Chapter in Book/Report/Conference proceedingChapter

30 Scopus citations


Rheumatoid arthritis (RA) is a chronic systemic autoimmune inflammatory disease that affects all ethnic groups throughout the world. Females are 2.5 times more likely to be affected than males. The onset of disease can occur at any age but peak incidence occurs within the fourth and fifth decades of life. The average annual incidence of RA in the United States is 0.5 per 1000 persons per year (1). The overall prevalence of RA is 1% to 2%, and it steadily increases to 5% in women by the age of 70 (2). However, there are differences in prevalence rates of RA in various ethnic groups, ranging from 0.1% in rural Africans to 5% in Pima or Chippewa Indians (3). Many factors contribute to the risk of developing RA and are reviewed in the following chapter (see Chapter 6B).

Original languageEnglish (US)
Title of host publicationPrimer on the Rheumatic Diseases: Thirteenth Edition
PublisherSpringer New York
Number of pages8
ISBN (Print)9780387356648
StatePublished - 2008

ASJC Scopus subject areas

  • Medicine(all)


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