Dr. Dahai Yu d.yu@keele.ac.uk
Background: OA poses a major challenge to population health and healthcare services. Unlike several other countries, there are no published estimates of the consultation incidence of OA based on population-based health care data in England.
Methods: We used the Consultations in Primary Care Archive (CiPCA), a database of recorded primary care consultation data and information from secondary care from general practices in North Staffordshire. We used data from 11 general practices who contributed data continuously between 2000 and 2010 (total registered population = 94 565 in 2010). Case definitions for OA (any joint site, and hip, knee, hand separately) used a previously validated algorithm based on first primary care or recorded secondary care contact with an OA diagnosis Read (morbidity) code. Consultation incidence estimates were derived by a novel method utilizing age-stratified run-in periods (number of prior years without a record of OA). These estimates were then compared with those published from 10 population-based healthcare databases in Canada, United States, and Spain.
Results: The annual consultation incidence of OA (any joint) was 8.9/1000 aged ≥15 years (95% CI: 8.2, 9.7); 6.5/1000 (5.7, 7.5) in men and 11.2/1000 (10.1 to 12.4) in women. Consultation incidence increased with age, peaking at 75–84 years as 24.7/1000 (20.6, 29.3).Consultation incidence estimates for hip, knee and hand OA were 1.4 (1.2, 1.8), 4.3 (3.8, 4.8), and 1.5 (1.2, 1.8) respectively. Compared with hip or knee OA, the consultation incidence for hand OA peaked earlier (55–64 vs 75–84 years) and had a markedly higher female: male incidence rate ratio [3.2 vs 1.6 (hip) or 1.0 (knee)]. The overall annual incidence from CiPCA was in the middle of the range (5.4/1000 to 10.4/1000) of previously published estimates. CiPCA and most previous estimates suggested incidence rates increased with age and peaked at elder age (≥75 years). Women from CiPCA and previous studies all similarly had 1.2- to 2-fold excess incidence than men for all types of OA (but markedly greater for hand OA). The highest joint-specific incidence was consistently estimated in knee OA by CiPCA and previous studies.
Conclusion: These are the first estimates of consultation incidence for OA using population-based healthcare data in England. The pattern of estimated consultation incidence in England is comparable to published estimates from other countries.
Yu, D., Peat, G., & Jordan, K. (2014). 45. Annual Consultation Incidence of Osteoarthritis Using Population-Based Healthcare Data in England. Rheumatology, 53(suppl_1), i72-i72. https://doi.org/10.1093/rheumatology/keu097.013
Journal Article Type | Conference Paper |
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Online Publication Date | Apr 3, 2014 |
Publication Date | 2014-04 |
Deposit Date | Sep 18, 2023 |
Journal | Rheumatology |
Print ISSN | 1462-0324 |
Electronic ISSN | 1462-0324 |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 53 |
Issue | suppl_1 |
Pages | i72-i72 |
DOI | https://doi.org/10.1093/rheumatology/keu097.013 |
Keywords | Pharmacology (medical); Rheumatology |
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