title: Epidemiology of eight common rheumatic diseases in China: a large-scale cross-sectional survey in Beijing.
abstract: OBJECTIVE
  To investigate the prevalence of eight common rheumatic diseases in a large Chinese population.
  
  
  METHODS
  A population-based epidemiological investigation of the prevalence of eight common rheumatic diseases in a suburb of Beijing was conducted in 14 642 individuals. A community-based survey was carried out using a screening questionnaire. Positive responders were included in a clinical and laboratory examination. Diagnosis was based on the criteria of ACR or those used widely in literature.
  
  
  RESULTS
  A total of 10 556 inhabitants were interviewed. Forty-three cases of RA were identified with an age-adjusted prevalence of 0.28% (95% CI 0.19%, 0.41%). Gout was diagnosed with a crude prevalence of 0.09% (95% CI 0.05%, 0.17%). Psoriasis was reported in 28 individuals with a prevalence of 0.27% (95% CI 0.18%, 0.38%). This included two cases diagnosed with PsA, resulting in a prevalence of 7.14% (95% CI 0.88%, 23.5%) in psoriasis patients and 0.02% (95% CI 0%, 0.07%) in the general population. Three individuals were identified with SLE, with a prevalence of 0.03% (95% CI 0%, 0.06%). One individual was identified with SSc and the calculated prevalence was 0.01% (95% CI 0%, 0.05%). One case of Behçet's disease was identified, giving a prevalence of 0.01% (95% CI 0%, 0.05%).
  
  
  CONCLUSIONS
  This large-scale epidemiological survey provides an estimate of the burden of rheumatic diseases in China.
authors.affiliation: Department of Rheumatology and Immunology, Peking University People's Hospital, 11 Xizhimen South St, Beijing 100044, China.
authors.forename: Ru
authors.initials: R
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Ren
authors.forename: Hong-Yu
authors.initials: HY
authors.lastname: Wang
authors.forename: Wen-Hong
authors.initials: WH
authors.lastname: Liu
authors.forename: Xue-Wu
authors.initials: XW
authors.lastname: Zhang
authors.forename: Shi
authors.initials: S
authors.lastname: Chen
authors.forename: Rong
authors.initials: R
authors.lastname: Mu
authors.forename: Jing
authors.initials: J
authors.lastname: He
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhao
authors.forename: Li
authors.initials: L
authors.lastname: Long
authors.forename: Yan-Ying
authors.initials: YY
authors.lastname: Liu
authors.forename: Xia
authors.initials: X
authors.lastname: Liu
authors.forename: Xiao-Lan
authors.initials: XL
authors.lastname: Lu
authors.forename: Yu-Hui
authors.initials: YH
authors.lastname: Li
authors.forename: Shi-Yao
authors.initials: SY
authors.lastname: Wang
authors.forename: Si-Si
authors.initials: SS
authors.lastname: Pan
authors.forename: Chun
authors.initials: C
authors.lastname: Li
authors.forename: Hong-Yuan
authors.initials: HY
authors.lastname: Wang
authors.forename: Zhan-Guo
authors.initials: ZG
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D015535:Arthritis, Psoriatic / Q000453:epidemiology; D001172:Arthritis, Rheumatoid / Q000453:epidemiology; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D014943:Global Health; D006073:Gout / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012216:Rheumatic Diseases / Q000453:epidemiology*; D017678:Sex Distribution; D055815:Young Adult