© 1975 Oxford University Press
research-article |
Rheumatoid Arthritis in the Pima Indians of Arizona: An Assessment of the Clinical Components of the New York Criteria
1 Chef de Clinique-Assistant des Hopitaux de Paris, Present address: Hopital Ambroise Pare, 9, Avenue Charles de Gaulle, Boulogne 92100, France.
2 Chief, Epidemiology and Field Studies Branch, National Institute of Arthritis, Metabolism, and Digestive Diseases.
3 Chief of Office of Research and Statistics, State of Hawaii, Department of Health Honolulu, Hawaii
Reprint requests should be addressed to Dr. J-C. Henrard
When a prevalence study of Rheumatoid Arthritis (RA) was made in the adult Pima Indian population living on the Gila River Reservation, a high prevalence was found using the New York criteria (5.9 per cent). This was mainly due to the high frequency of limitation of motion which brought in many undesirable subjects.
After excluding it as a component of New York criteria we found a prevalence for RA of 3 per cent with a predominance among the females (3.8 as against 2.0 per cent in males). The group so defined fulfilled the requirements of the Rome criteria, showed a higher concordance with serological or radiological evidence of RA, and appeared to identify subjects in whom the experienced clinical rheumatologist would more often agree with the diagnosis.
Received 24 February 1975