Low prevalence of rheumatoid arthritis in Chinese. Prevalence survey in a rural community.
A prevalence survey for arthritis among the general adult population of a rural island off the coast of China revealed a prevalence of rheumatoid arthritis (RA) of no more than 0.3% compared with 1.0% among Americans in the National Health Examination Survey (NHES). The frequency of clinical ankylosing spondylitis (AS) (0.2%) appears to be higher than expected, although limited data are available for comparison. No clinically unusual features of these diseases were recognized.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000453:epidemiology*; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012424:Rural Population; D012737:Sex Factors; D013167:Spondylitis, Ankylosing / Q000453:epidemiology