The claim states '63%' higher cardiovascular risk in the year after COVID-19. The abstract contains NO specific percentage values whatsoever. It describes increased risks and burdens in qualitative terms only ('increased risk,' 'substantial,' 'graded fashion'), with no quantitative estimates of effect sizes, hazard ratios, or percentage increases. The number '63%' does not appear in the abstract and there is no plausible way to derive this specific figure from the abstract's text. The abstract discusses relative risks increasing by care setting (non-hospitalized, hospitalized, ICU) but provides no numerical values. This appears to be a fabricated statistic or possibly conflated from a different source.

Suggested fix: The abstract does not contain specific percentage estimates. It qualitatively states that cardiovascular risks 'increased in a graded fashion according to the care setting during the acute phase' and that 'the risk and 1-year burden of cardiovascular disease in survivors of acute COVID-19 are substantial.' Full paper review required for quantitative estimates.

The abstract mentions heart failure as one of the cardiovascular outcomes studied, but contains NO quantitative statistics whatsoever. There are no hazard ratios, no confidence intervals, no percentages, and no specific numerical findings of any kind in the abstract. The claim provides a precise HR of 1.72 (95% CI: 1.65-1.80), which represents a +72% increased risk. This level of specificity suggests the numbers may come from the full paper, but they are completely absent from the abstract. The abstract only makes qualitative statements like 'increased risk,' 'graded fashion,' and 'substantial' without any numbers. Since the abstract has zero quantitative data, I cannot verify the specific statistic claimed. However, the mention of heart failure as an outcome means this is likely 'not_in_abstract' rather than 'fabricated' - the topic is addressed but without the specific numbers claimed.

The abstract provides a high-level summary of findings but contains NO specific quantitative statistics—no hazard ratios, no confidence intervals, no percentage increases, and no specific numbers for atrial fibrillation or any other cardiovascular outcome. The abstract states that risks 'increased in a graded fashion according to the care setting' and that risks are 'substantial,' but provides no numerical data. The claimed statistic HR 1.71 (95% CI: 1.64-1.79) for atrial fibrillation (+71%) is not present in the abstract. While this statistic may appear in the full paper (the abstract mentions 'pre-specified incident cardiovascular outcomes' and 'dysrhythmias' which would include atrial fibrillation), it cannot be verified from the abstract alone. The claim is not fabricated because the topic (cardiovascular complications post-COVID) matches the paper's focus, and the magnitude of effect is plausible given the abstract's description of 'substantial' risks. However, important caveats are missing: the population (US Veterans, predominantly male, older), time period (likely early pandemic, pre-Omicron), and the specific comparison groups (contemporary vs. historical controls) are not mentioned in the claim.