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Secular trends in sickness absence among Swedish patients with ankylosing spondylitis and psoriatic arthritis

Nielsen, Christel LU ; Petersson, Ingemar F. LU ; Jacobsson, Lennart T.H. LU and Jöud, Anna LU (2017) In Rheumatology International p.1-8
Abstract

The aim was to investigate whether secular trends in sickness absence (SA) were present in patients with ankylosing spondylitis (AS) and psoriatic arthritis (PsA) receiving their diagnosis between 2002 and 2011. A repeated cross-sectional study design was used. Patients were identified in the Skåne Healthcare Register (SHR). A washout period of 18 months was applied. The general population seeking health care was used as a reference cohort. SA data from 2003 to 2012 were obtained from the Swedish Social Insurance Agency and converted into net days of SA per year. Within diagnosis and sex, the average number of net days of SA during the calendar year following diagnosis was calculated and plotted against calendar year together with the... (More)

The aim was to investigate whether secular trends in sickness absence (SA) were present in patients with ankylosing spondylitis (AS) and psoriatic arthritis (PsA) receiving their diagnosis between 2002 and 2011. A repeated cross-sectional study design was used. Patients were identified in the Skåne Healthcare Register (SHR). A washout period of 18 months was applied. The general population seeking health care was used as a reference cohort. SA data from 2003 to 2012 were obtained from the Swedish Social Insurance Agency and converted into net days of SA per year. Within diagnosis and sex, the average number of net days of SA during the calendar year following diagnosis was calculated and plotted against calendar year together with the corresponding SA of the age-standardized reference population. Linear regression on aggregated data, within diagnosis and sex, was applied to formally investigate differences in secular trends among patients and referents. There were 3173 patients and 992,502 referents. Among men diagnosed with AS, the average amount of SA declined by 8.1 net days per year in patients as compared with 2.4 in the referents (p = 0.01). Among PsA patients, the average amount of SA declined by 11.7 net days per year in women as compared with 2.7 in the referents (p < 0.001) and by 7.6 net days per year in men as compared with 1.9 in the referents (p < 0.001). Secular trends of declining SA were present among AS and PsA patients. Trends were also present among the referents, although not at all of the same magnitude.

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author
organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
Ankylosing spondylitis, Epidemiology, Psoriatic arthritis, Secular trends, Sickness absence
in
Rheumatology International
pages
8 pages
publisher
Springer
external identifiers
  • scopus:85028831651
  • pmid:28879599
ISSN
0172-8172
DOI
10.1007/s00296-017-3809-z
language
English
LU publication?
yes
id
2c58d10b-2a75-41dd-867d-ef14941136c0
date added to LUP
2017-10-09 11:34:48
date last changed
2018-01-07 12:21:24
@article{2c58d10b-2a75-41dd-867d-ef14941136c0,
  abstract     = {<p>The aim was to investigate whether secular trends in sickness absence (SA) were present in patients with ankylosing spondylitis (AS) and psoriatic arthritis (PsA) receiving their diagnosis between 2002 and 2011. A repeated cross-sectional study design was used. Patients were identified in the Skåne Healthcare Register (SHR). A washout period of 18 months was applied. The general population seeking health care was used as a reference cohort. SA data from 2003 to 2012 were obtained from the Swedish Social Insurance Agency and converted into net days of SA per year. Within diagnosis and sex, the average number of net days of SA during the calendar year following diagnosis was calculated and plotted against calendar year together with the corresponding SA of the age-standardized reference population. Linear regression on aggregated data, within diagnosis and sex, was applied to formally investigate differences in secular trends among patients and referents. There were 3173 patients and 992,502 referents. Among men diagnosed with AS, the average amount of SA declined by 8.1 net days per year in patients as compared with 2.4 in the referents (p = 0.01). Among PsA patients, the average amount of SA declined by 11.7 net days per year in women as compared with 2.7 in the referents (p &lt; 0.001) and by 7.6 net days per year in men as compared with 1.9 in the referents (p &lt; 0.001). Secular trends of declining SA were present among AS and PsA patients. Trends were also present among the referents, although not at all of the same magnitude.</p>},
  author       = {Nielsen, Christel and Petersson, Ingemar F. and Jacobsson, Lennart T.H. and Jöud, Anna},
  issn         = {0172-8172},
  keyword      = {Ankylosing spondylitis,Epidemiology,Psoriatic arthritis,Secular trends,Sickness absence},
  language     = {eng},
  month        = {09},
  pages        = {1--8},
  publisher    = {Springer},
  series       = {Rheumatology International},
  title        = {Secular trends in sickness absence among Swedish patients with ankylosing spondylitis and psoriatic arthritis},
  url          = {http://dx.doi.org/10.1007/s00296-017-3809-z},
  year         = {2017},
}