title: [An epidemiological study of sacroiliitis among the native inhabitants of Chukotka].
abstract: For determination of sacroiliitis frequency among natives of Chukotka peninsula a cross-over epidemiological study was conducted. A total of 975 subjects aged 6 years and older were examined. 324 of them (33.2%) had low back pain. X-ray of the pelvis was made in 239 of 324 patients. It was found that sacroiliitis incidence in Chukotka natives makes up 11.3%. There were marked differences in sex distribution: in males 17.1%, in females 5.7%, RR = 3.9. Out of Chukotka natives with low back pain 2.5% had ankylosing spondylitis, of patients with sacroiliitis 30%. A prospective study of patients with sacroiliitis recorded development of ankylosing spondylitis in 17% of the cases 4 years after the disease onset.
authors.forename: Sh
authors.initials: Sh
authors.lastname: Erdes
authors.forename: L I
authors.initials: LI
authors.lastname: Benevolenskaia
authors.forename: L I
authors.initials: LI
authors.lastname: Alekseeva
authors.forename: N M
authors.initials: NM
authors.lastname: Mylov
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D001168:Arthritis / Q000175:diagnosis / Q000208:ethnology*; D002648:Child; D005260:Female; D015796:HLA-B27 Antigen / Q000097:blood; D006801:Humans; D008297:Male; D008875:Middle Aged; D044468:Native Hawaiian or Pacific Islander / Q000706:statistics & numerical data*; D044469:Racial Groups; D011859:Radiography; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging; D017678:Sex Distribution; D012800:Siberia / Q000453:epidemiology; D013131:Spine / Q000000981:diagnostic imaging
chemical_list: D015796:HLA-B27 Antigen
vernacular_title: Epidemiologicheskoe issledovanie sakroileita sredi korennykh zhiteleĭ Chukotki.