National burden of rheumatoid arthritis in Canada, 1990–2019: findings from the Global Burden of Disease Study 2019 – a GBD collaborator-led study

Author:

Hassen NejatORCID,Lacaille Diane,Xu Alice,Alandejani Amani,Sidi Sophia,Mansourian Marjan,Butt Zahid A,Cahill Leah E,Iyamu Ihoghosa Osamuyi,Lang Justin J,Rana Juwel,Somayaji Ranjani,Sarrafzadegan Nizal,Kopec Jacek A

Abstract

ObjectiveThe objectives of this study were: (1) to describe burden of rheumatoid arthritis (RA) and trends from 1990 to 2019 using the Global Burden of Diseases, Injuries and Risk Factors Study (GBD) data, (2) to describe age and sex differences in RA and (3) to compare Canada’s RA burden to that of other countries.MethodsDisease burden indicators included prevalence, mortality, years of life lost (YLLs), years lived with disability (YLDs) and disability-adjusted life-years (DALYs). GBD estimated fatal and non-fatal outcomes using published literature, survey data and health insurance claims. Data were analysed by Bayesian meta-regression, cause of death ensemble model and other statistical methods. DALYs for Canada were compared with DALYs of countries with similarly high Socio-Demographic Index values.ResultsIn Canada, the RA prevalence rate increased by 27% between 1990 and 2019, mortality rate decreased by 27%, YLL rate decreased by 30%, YLD increased by 27% and DALY rate increased by 13%, all age standardised. The decline in RA mortality and YLL rates was especially pronounced after 2002. The disease burden was higher in females for all indicators, and DALY rates were higher among older age groups, peaking at age 75–79 years. Prevalence and DALYs were higher in Canada compared with global rates.ConclusionTrends in RA burden indicators over time and differences by age and sex have important implications for Canadian policy-makers, researchers and care providers. Early identification and management of RA in women may help reduce the overall burden of RA in Canada.

Funder

Bill and Melinda Gates Foundation

Publisher

BMJ

Subject

Immunology,Immunology and Allergy,Rheumatology

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