ArticleJournal of internal medicine2026
Long-term risk of cardiovascular events after COVID-19 in the Swedish adult population-A matched cohort study.
Article in Journal of internal medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
1 citing paper in PubMed.
- Long-term risk of cardiovascular events after COVID-19 in the Swedish adult population-A matched cohort study.Journal of internal medicine · 2026Article
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11 authors.
Funding
Abstract
backgroundThe long-term risk across severity strata of people infected with SARS-CoV-2 has not yet been comprehensively described.
methodsUsing nationwide registries, all COVID-19 cases in Sweden with <2 vaccine doses, with and without initial hospitalization (February 1, 2020 to June 30, 2022), were identified and matched with non-COVID comparators. Participants were followed during the early, intermediate, long-term, and extended phases (365+ days) regarding death, acute myocardial infarction (AMI), ischemic stroke (IS), or heart failure (HF), and a composite of major adverse cardiovascular events (MACEs). Hazard ratios (HRs) were estimated using Cox proportional hazard regression adjusted for age, sex, obesity, hypertension, need of assisted living, Nordic origin, education, and Charlson Comorbidity Index.
resultsWe identified 1,024,623 nonhospitalized (mean age: 40.4 years, 48.1% men) and 49,855 hospitalized (mean age: 58.8 years, 58.9% men) COVID-19 cases who were matched with 1,022,266 and 249,142 non-COVID comparators, respectively. Overall, nonhospitalized cases had no remaining risk of MACE past the early phase following COVID-19 infection. Among hospitalized cases, the risk of MACE remained elevated into the long-term and extended follow-up period (HRs 1.70 [confidence interval (CI) = 1.56-1.86] and 1.62 [CI = 1.51-1.72]) compared with comparators. After 365 days, they had a persistently increased risk of death (HR = 1.75, CI = 1.62-1.89), IS (HR = 1.40, CI = 1.18-1.67), HF (HR = 2.07, CI = 1.74-2.45), and AMI (HR = 1.28, CI = 1.07-1.53), compared with non-COVID comparators.
conclusionsHospitalized COVID-19 cases continued to have a nearly doubled risk of cardiovascular events and death after the first year of follow-up, whereas nonhospitalized cases had risks comparable to population comparators.
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