Dept. of Dermatology, Sahlgrenska Hospital, Gothenburg, Sweden.
Scand J Rheumatol. 1987;16(1):18-21. doi: 10.3109/03009747009165351.
The prevalence of rheumatoid arthritis in 1,287 persons living in densely populated areas and 1, 287 persons living in thinly populated areas, matched as to sex, age, occupation and geographical area, was compared. The patient material was obtained in an epidemiological survey of rheumatoid arthritis (ARA definition) performed in Sweden in 1961. 1.6% of the inhabitants in densely populated areas and 2.5% in thinly populated areas had rheumatoid arthritis (classical, definite, probable, possible). The differences were indicative but not significant. Classical plus definite rheumatoid arthritis, however, showed exactly the same prevalences in the two populations (0.5%). Probable plus possible rheumatoid arthritis was indicatively more prevalent in the thinly populated areas (2.0%) than in the densely populated (1.1%).
比较了居住在人口密集地区的 1287 人和居住在人口稀少地区的 1287 人（按性别、年龄、职业和地理区域匹配）的类风湿关节炎患病率。患者资料是在瑞典 1961 年进行的类风湿关节炎（ARA 定义）的流行病学调查中获得的。人口密集地区的居民中有 1.6%，人口稀少地区的居民中有 2.5%患有类风湿关节炎（经典、明确、可能、可能）。这些差异具有指示性，但没有统计学意义。然而，经典加明确的类风湿关节炎在这两个人群中的患病率完全相同（0.5%）。可能加可能的类风湿关节炎在人口稀少地区（2.0%）比在人口密集地区（1.1%）更为常见，具有指示性。
