title: [Epidemiological investigation of back pain and spondyloarthritis in Shougang resident communities].
abstract: OBJECTIVE
  To investigate the epidemiological features of back pain, spondyloarthritis (SpA) and ankylosing spondylitis (AS) in Beijing Shougang district.
  
  
  METHODS
  Set up Chinese version of questionnaire about incidence of spondyloarthropathy. Employees and retired ones were drawn out from sub-factory units by non-randomized sampling.15 357 subjects were investigated, of which 12 125 questionnaires were taken. Suspected cases were then screened with sacroiliac joint X ray and HLA-B(27) testing. 2009 assessment in ankylosing spondylitis (ASAS) criteria were used for diagnosing SpA.
  
  
  RESULTS
  Back pain is common with total incidence of 42.7%, and the most common pattern is mechanical pain. The incidence of SpA is 0.58% and that of AS is 0.36%, while only 28.9% AS patients had been diagnosed before and received treatment.
  
  
  CONCLUSIONS
  The AS incidence in Shougang district is similar with the epidemiological data got from other districts of China. And knowledge of SpA and AS is needed in China.
authors.affiliation: Department of Rheumatology, Chinese PLA General Hospital, Beijing, China.
authors.forename: Jing-yu
authors.initials: JY
authors.lastname: Jin
authors.forename: Shu-ling
authors.initials: SL
authors.lastname: Han
authors.forename: Kun-peng
authors.initials: KP
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Zhu
authors.forename: Jiang-lin
authors.initials: JL
authors.lastname: Zhang
authors.forename: Yan-hua
authors.initials: YH
authors.lastname: Liao
authors.forename: Xin
authors.initials: X
authors.lastname: Guan
authors.forename: Xiu-ru
authors.initials: XR
authors.lastname: Wang
authors.forename: Feng
authors.initials: F
authors.lastname: Huang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001416:Back Pain / Q000453:epidemiology*; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D025241:Spondylarthritis / Q000453:epidemiology*; D055815:Young Adult