Rheumatic and Musculoskeletal Diseases and Risk of Dementia: A Nested Case-Control Study. Kiadaliri, A., Dell'Isola, A., Turkiewicz, A., & Englund, M. ACR open rheumatology, 6(8):504–510, August, 2024.
doi  abstract   bibtex   
OBJECTIVE: To investigate the associations between rheumatic and musculoskeletal diseases (RMDs) and incident dementia using population register-based data. METHODS: This nested case-control study was conducted based on a cohort of residents in the Skåne region, Sweden, aged 50 years and older in 2009 without doctor-diagnosed dementia during 1998 to 2009 (n = 402,825). Individuals with a new main diagnosis of dementia during 2010 to 2019 were identified as incident patients with dementia (n = 22,131). Controls without diagnosed dementia were randomly matched 1:1 by sex, age, and Elixhauser comorbidity index using incidence density sampling. Separate conditional logistic regression analyses adjusted for confounders were fitted for the following RMDs, diagnosed at least 2 years before dementia diagnosis as exposure: gout, osteoarthritis, rheumatoid arthritis, spondyloarthropathies (SpA), and systemic connective tissue disorders. Subgroup analyses by dementia subtype, sex, age, comorbidity, and RMDs/dementia identification were conducted. RESULTS: Although gout (adjusted rate ratio 0.88; 95% confidence interval 0.79-0.97), osteoarthritis (0.92; 0.88-0.96), and systemic connective tissue disorders (0.91; 0.83-0.99) were associated with decreased risk of dementia, the associations for rheumatoid arthritis (1.05; 0.92-1.19) and SpA (1.17; 0.94-1.45) were inconclusive. The associations between RMDs and incident dementia were similar across sex, age, and comorbidity subgroups with a few exceptions (eg, an adjusted rate ratio of 0.99 [95% confidence interval 0.71-1.39] in males vs 1.31 [0.99-1.74] in female patients for SpA). CONCLUSION: Persons with diagnosed RMDs seem to have comparable or slightly lower risks of developing dementia compared with those without known RMD.
@article{kiadaliri_rheumatic_2024,
	title = {Rheumatic and {Musculoskeletal} {Diseases} and {Risk} of {Dementia}: {A} {Nested} {Case}-{Control} {Study}},
	volume = {6},
	issn = {2578-5745},
	shorttitle = {Rheumatic and {Musculoskeletal} {Diseases} and {Risk} of {Dementia}},
	doi = {10.1002/acr2.11705},
	abstract = {OBJECTIVE: To investigate the associations between rheumatic and musculoskeletal diseases (RMDs) and incident dementia using population register-based data.
METHODS: This nested case-control study was conducted based on a cohort of residents in the Skåne region, Sweden, aged 50 years and older in 2009 without doctor-diagnosed dementia during 1998 to 2009 (n = 402,825). Individuals with a new main diagnosis of dementia during 2010 to 2019 were identified as incident patients with dementia (n = 22,131). Controls without diagnosed dementia were randomly matched 1:1 by sex, age, and Elixhauser comorbidity index using incidence density sampling. Separate conditional logistic regression analyses adjusted for confounders were fitted for the following RMDs, diagnosed at least 2 years before dementia diagnosis as exposure: gout, osteoarthritis, rheumatoid arthritis, spondyloarthropathies (SpA), and systemic connective tissue disorders. Subgroup analyses by dementia subtype, sex, age, comorbidity, and RMDs/dementia identification were conducted.
RESULTS: Although gout (adjusted rate ratio 0.88; 95\% confidence interval 0.79-0.97), osteoarthritis (0.92; 0.88-0.96), and systemic connective tissue disorders (0.91; 0.83-0.99) were associated with decreased risk of dementia, the associations for rheumatoid arthritis (1.05; 0.92-1.19) and SpA (1.17; 0.94-1.45) were inconclusive. The associations between RMDs and incident dementia were similar across sex, age, and comorbidity subgroups with a few exceptions (eg, an adjusted rate ratio of 0.99 [95\% confidence interval 0.71-1.39] in males vs 1.31 [0.99-1.74] in female patients for SpA).
CONCLUSION: Persons with diagnosed RMDs seem to have comparable or slightly lower risks of developing dementia compared with those without known RMD.},
	language = {eng},
	number = {8},
	journal = {ACR open rheumatology},
	author = {Kiadaliri, Ali and Dell'Isola, Andrea and Turkiewicz, Aleksandra and Englund, Martin},
	month = aug,
	year = {2024},
	pages = {504--510},
}

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