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Pearce, Fiona A., Grainge, Matthew J., Lanyon, Peter C., Watts, Richard A and Hubbard, Richard B. (2016) The incidence, prevalence and mortality of granulomatosis with polyangiitis in the UK Clinical Practice Research Datalink. Rheumatology . pp. 1-8. ISSN 1462-0324

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Abstract

Objectives: To estimate the incidence, prevalence and mortality of Granulomatosis with polyangiitis (GPA) in the United Kingdom.

Methods: We conducted a historical cohort study using data from the Clinical Practice Research Datalink and Hospital Episode Statistics (CPRD-HES). We calculated incidence rate ratios, adjusted for age, gender and ethnicity, using Poisson regression.

Results: We identified 462 cases diagnosed between 1997 and 2013. Our overall estimate of incidence was 11.8 (95% CI 10.7-12.9)/million person-years. Incidence in children (aged <16 years) was 0.88 (95% CI 0.40-1.96), and adults 14.0 (95% CI 12.8-15.4). The incidence was lower in females (adjusted IRR 0.68; 95% CI 0.56-0.81) and highest in the 55-69 year age-group (adjusted IRR 9.5, 95% CI 6.9-13.0; reference group 0-39 years). Incidence was not significantly different in the Black / Minority Ethnic population compared to the white population (adjusted odds ratio 0.78, 95% CI 0.53-1.13, p=0.13). The prevalence in 2013 was 134.9 (121.3-149.6) /million. Mortality was 13.6% at 1-year, and higher in HES than CPRD-identified cases (Hazard ratio 3.16, 95% CI 2.19-4.56, p<0.001).

Conclusions: By combining primary and secondary care datasets we have found the incidence and mortality of granulomatosis with polyangiitis to be higher than previously reported. We predict that at present each year in the UK there will be approximately 700 new cases of whom 95 will die within 12 months.

Item Type:	Article
RIS ID:	https://nottingham-repository.worktribe.com/output/832288
Additional Information:	This is a pre-copyedited, author-produced version of an article accepted for publication in Rheumatology following peer review. The version of record: The incidence, prevalence and mortality of granulomatosis with polyangiitis in the UK Clinical Practice Research Datalink / Fiona A. Pearce, Matthew J. Grainge, Peter C. Lanyon, Richard A. Watts and Richard B. Hubbard is available online at: http://rheumatology.oxfordjournals.org/content/early/2016/12/21/rheumatology.kew413
Keywords:	vasculitis incidence prevalence mortality epidemiology
Schools/Departments:	University of Nottingham, UK > Faculty of Medicine and Health Sciences > School of Medicine > Division of Epidemiology and Public Health
Identification Number:	https://doi.org/10.1093/rheumatology/kew413
Depositing User:	Pearce, Fiona
Date Deposited:	12 Jan 2017 10:39
Last Modified:	15 Aug 2024 15:21
URI:	https://eprints.nottingham.ac.uk/id/eprint/39731

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