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Prevalence of spondyloarthritis and its subtypes in southern Sweden

Haglund, Emma LU ; Bremander, Ann LU ; Petersson, Ingemar LU ; Strömbeck, Britta LU ; Bergman, Stefan; Jacobsson, Lennart LU ; Turkiewicz, Aleksandra; Geborek, Pierre LU and Englund, Martin LU (2011) In Annals of the Rheumatic Diseases 70. p.943-948
Abstract
OBJECTIVE: To estimate the prevalence of spondyloarthritis and its subtypes.



METHODS: The Swedish healthcare organisation comprises a system where all inpatient and outpatient care is registered by a personal identifier. For the calendar years 2003-7, all residents aged ≥15 years in the southernmost county of Sweden (1.2 million inhabitants) diagnosed by a physician with spondyloarthritis (ankylosing spondylitis (AS), psoriatic arthritis (PsA), inflammatory arthritis associated with inflammatory bowel disease (Aa-IBD) or undifferentiated spondylarthritis (USpA)) were identified. To obtain valid point estimates of prevalence by the end of 2007, identification numbers were cross-referenced with the population register to... (More)
OBJECTIVE: To estimate the prevalence of spondyloarthritis and its subtypes.



METHODS: The Swedish healthcare organisation comprises a system where all inpatient and outpatient care is registered by a personal identifier. For the calendar years 2003-7, all residents aged ≥15 years in the southernmost county of Sweden (1.2 million inhabitants) diagnosed by a physician with spondyloarthritis (ankylosing spondylitis (AS), psoriatic arthritis (PsA), inflammatory arthritis associated with inflammatory bowel disease (Aa-IBD) or undifferentiated spondylarthritis (USpA)) were identified. To obtain valid point estimates of prevalence by the end of 2007, identification numbers were cross-referenced with the population register to exclude patients who had died or relocated.



RESULTS: The authors estimated the prevalence of spondyloarthritis (not including chronic reactive arthritis) as 0.45% (95% CI 0.44% to 0.47%). The mean (SD) age of patients with prevalent spondyloarthritis by the end of 2007 was 53 (15) years. Among the component subtypes, PsA accounted for 54% of cases, AS 21.4%, USpA 17.8% and Aa-IBD 2.3% with a prevalence of 0.25%, 0.12%, 0.10% and 0.015%, respectively. The remaining 6.4% had some form of combination of spondyloarthritis diagnoses. The prevalence of spondyloarthritis at large was about the same in men and women. However, the subtype PsA was more prevalent in women and AS was more prevalent in men.



CONCLUSION: In Sweden the prevalence of spondyloarthritis leading to a doctor consultation is not much lower than rheumatoid arthritis. PsA was the most frequent subtype followed by AS and USpA, and the two most frequent subtypes PsA and AS also display some distinct sex patterns. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Spondyloarthritis, prevalence
in
Annals of the Rheumatic Diseases
volume
70
pages
943 - 948
publisher
British Medical Association
external identifiers
  • wos:000290149900011
  • scopus:79955792593
ISSN
1468-2060
DOI
10.1136/ard.2010.141598
language
English
LU publication?
yes
id
ceef43b7-391b-4985-b0fe-44d0891d6a37 (old id 1856903)
date added to LUP
2011-03-17 12:37:06
date last changed
2017-11-12 03:47:20
@article{ceef43b7-391b-4985-b0fe-44d0891d6a37,
  abstract     = {OBJECTIVE: To estimate the prevalence of spondyloarthritis and its subtypes.<br/><br>
<br/><br>
METHODS: The Swedish healthcare organisation comprises a system where all inpatient and outpatient care is registered by a personal identifier. For the calendar years 2003-7, all residents aged ≥15 years in the southernmost county of Sweden (1.2 million inhabitants) diagnosed by a physician with spondyloarthritis (ankylosing spondylitis (AS), psoriatic arthritis (PsA), inflammatory arthritis associated with inflammatory bowel disease (Aa-IBD) or undifferentiated spondylarthritis (USpA)) were identified. To obtain valid point estimates of prevalence by the end of 2007, identification numbers were cross-referenced with the population register to exclude patients who had died or relocated.<br/><br>
<br/><br>
RESULTS: The authors estimated the prevalence of spondyloarthritis (not including chronic reactive arthritis) as 0.45% (95% CI 0.44% to 0.47%). The mean (SD) age of patients with prevalent spondyloarthritis by the end of 2007 was 53 (15) years. Among the component subtypes, PsA accounted for 54% of cases, AS 21.4%, USpA 17.8% and Aa-IBD 2.3% with a prevalence of 0.25%, 0.12%, 0.10% and 0.015%, respectively. The remaining 6.4% had some form of combination of spondyloarthritis diagnoses. The prevalence of spondyloarthritis at large was about the same in men and women. However, the subtype PsA was more prevalent in women and AS was more prevalent in men.<br/><br>
<br/><br>
CONCLUSION: In Sweden the prevalence of spondyloarthritis leading to a doctor consultation is not much lower than rheumatoid arthritis. PsA was the most frequent subtype followed by AS and USpA, and the two most frequent subtypes PsA and AS also display some distinct sex patterns.},
  author       = {Haglund, Emma and Bremander, Ann and Petersson, Ingemar and Strömbeck, Britta and Bergman, Stefan and Jacobsson, Lennart and Turkiewicz, Aleksandra and Geborek, Pierre and Englund, Martin},
  issn         = {1468-2060},
  keyword      = {Spondyloarthritis,prevalence},
  language     = {eng},
  pages        = {943--948},
  publisher    = {British Medical Association},
  series       = {Annals of the Rheumatic Diseases},
  title        = {Prevalence of spondyloarthritis and its subtypes in southern Sweden},
  url          = {http://dx.doi.org/10.1136/ard.2010.141598},
  volume       = {70},
  year         = {2011},
}