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Socioeconomic inequalities in knee pain, knee osteoarthritis, and health-related quality of life : a population-based cohort study in southern Sweden

Ahmad Kiadaliri, Aliasghar LU ; Gerhardsson de Verdier, M.; Turkiewicz, A. LU ; Lohmander, L. LU and Englund, M. LU (2016) In Scandinavian Journal of Rheumatology p.1-9
Abstract

Objectives: To determine socioeconomic inequalities in frequent knee pain (FKP), knee osteoarthritis (OA), and associated health-related quality of life (HRQoL) in Sweden. Method: In 2007 a postal questionnaire about knee pain was sent to a random sample of 10 000 residents of Malmö, Sweden (7402 individuals responded). Subjects reporting pain with duration ≥ 4 weeks in one or both knees in the past 12 months were classified as having FKP. A random sample of 1527 subjects with and without FKP attended a clinical and radiographic knee examination and responded to generic and disease-specific HRQoL questionnaires. We used the individuals’ level of education and occupation as socioeconomic status (SES) measures, and we calculated the... (More)

Objectives: To determine socioeconomic inequalities in frequent knee pain (FKP), knee osteoarthritis (OA), and associated health-related quality of life (HRQoL) in Sweden. Method: In 2007 a postal questionnaire about knee pain was sent to a random sample of 10 000 residents of Malmö, Sweden (7402 individuals responded). Subjects reporting pain with duration ≥ 4 weeks in one or both knees in the past 12 months were classified as having FKP. A random sample of 1527 subjects with and without FKP attended a clinical and radiographic knee examination and responded to generic and disease-specific HRQoL questionnaires. We used the individuals’ level of education and occupation as socioeconomic status (SES) measures, and we calculated the relative index of inequality (RII) using Poisson regression with robust standard errors adjusted for age and gender. We applied weighting to account for a possible selection bias that might arise from non-responses in the study. Results: With education, the RIIs for FKP and knee OA were 0.71 [95% confidence interval (CI) 0.61–0.84] and 0.56 (95% CI 0.34–0.93), respectively. With occupation, the corresponding figures were 0.70 (95% CI 0.60–0.82) and 0.59 (95% CI 0.37–0.94), respectively. There were socioeconomic gradients in HRQoL in favour of people with better SES. RIIs for FKP and HRQoL but not knee OA were essentially similar after additional adjustment for mediators. Conclusions: In Sweden there are socioeconomic gradients related to both FKP and knee OA as well as HRQoL in favour of people with better SES. SES should be taken into account in health resource allocation pertaining to knee-related disorders.

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publication status
epub
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in
Scandinavian Journal of Rheumatology
pages
9 pages
publisher
Taylor & Francis
external identifiers
  • scopus:84978951906
  • wos:000398187100009
ISSN
0300-9742
DOI
10.1080/03009742.2016.1181203
language
English
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yes
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40099d23-46b6-473c-8be2-8876a381349a
date added to LUP
2016-08-17 15:54:44
date last changed
2017-09-18 11:28:33
@article{40099d23-46b6-473c-8be2-8876a381349a,
  abstract     = {<p>Objectives: To determine socioeconomic inequalities in frequent knee pain (FKP), knee osteoarthritis (OA), and associated health-related quality of life (HRQoL) in Sweden. Method: In 2007 a postal questionnaire about knee pain was sent to a random sample of 10 000 residents of Malmö, Sweden (7402 individuals responded). Subjects reporting pain with duration ≥ 4 weeks in one or both knees in the past 12 months were classified as having FKP. A random sample of 1527 subjects with and without FKP attended a clinical and radiographic knee examination and responded to generic and disease-specific HRQoL questionnaires. We used the individuals’ level of education and occupation as socioeconomic status (SES) measures, and we calculated the relative index of inequality (RII) using Poisson regression with robust standard errors adjusted for age and gender. We applied weighting to account for a possible selection bias that might arise from non-responses in the study. Results: With education, the RIIs for FKP and knee OA were 0.71 [95% confidence interval (CI) 0.61–0.84] and 0.56 (95% CI 0.34–0.93), respectively. With occupation, the corresponding figures were 0.70 (95% CI 0.60–0.82) and 0.59 (95% CI 0.37–0.94), respectively. There were socioeconomic gradients in HRQoL in favour of people with better SES. RIIs for FKP and HRQoL but not knee OA were essentially similar after additional adjustment for mediators. Conclusions: In Sweden there are socioeconomic gradients related to both FKP and knee OA as well as HRQoL in favour of people with better SES. SES should be taken into account in health resource allocation pertaining to knee-related disorders.</p>},
  author       = {Ahmad Kiadaliri, Aliasghar and Gerhardsson de Verdier, M. and Turkiewicz, A. and Lohmander, L. and Englund, M.},
  issn         = {0300-9742},
  language     = {eng},
  month        = {07},
  pages        = {1--9},
  publisher    = {Taylor & Francis},
  series       = {Scandinavian Journal of Rheumatology},
  title        = {Socioeconomic inequalities in knee pain, knee osteoarthritis, and health-related quality of life : a population-based cohort study in southern Sweden},
  url          = {http://dx.doi.org/10.1080/03009742.2016.1181203},
  year         = {2016},
}