| アブストラクト | BACKGROUND: Observational studies suggesting that immunizations strongly decrease the risk of dementia had several methodological limitations. We assessed whether common vaccines are associated with the risk of dementia. METHODS: We assembled a population-based cohort of dementia-free individuals aged >/=50 years in the United Kingdom's Clinical Practice Research Datalink between 1988 and 2018. Using a nested case-control approach, we matched each patient with dementia with 4 controls. Conditional logistic regression yielded confounder-adjusted odds ratios (ORs) with 95% confidence intervals (CIs) of dementia associated with common vaccines >2 years before the index date compared with no exposure during the study period. Moreover, we applied a 10-year lag period and used active comparators (participation in breast or prostate cancer screening) to account for detection bias. RESULTS: Common vaccines were associated with an increased risk of dementia (OR, 1.38 [95% CI, 1.36-1.40]), compared with no exposure. Applying a 10-year lag period (OR, 1.20 [95% CI, 1.18-1.23]) and comparing versus prostate cancer screening (1.19 [ 1.11-1.27]) but not breast cancer screening (1.37 [1.30-1.45]) attenuated the risk increase. CONCLUSIONS: Common vaccines were not associated with a decreased risk of dementia. Unmeasured confounding and detection bias likely accounted for the observed increased risk. |
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| ジャーナル名 | The Journal of infectious diseases |
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| Pubmed追加日 | 2022/12/22 |
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| 投稿者 | Douros, Antonios; Ante, Zharmaine; Suissa, Samy; Brassard, Paul |
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| 組織名 | Departments of Medicine and of Epidemiology, Biostatistics, and Occupational;Health, McGill University, Montreal, Quebec, Canada.;Centre for Clinical Epidemiology, Lady Davis Institute, Montreal, Quebec, Canada.;Institute of Clinical Pharmacology and Toxicology, Charite-Universitatsmedizin;Berlin, Berlin, Germany. |
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| Pubmed リンク | https://www.ncbi.nlm.nih.gov/pubmed/36542511/ |
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