Key result
Incident AMI hospitalizations from 2008 to 2018 are linked to ~23% lower long-term mortality.
Why the study?
Advances in technology and care quality have transformed acute myocardial infarction care, but trends in mortality rates across separate time periods after hospitalization remain poorly understood.
Have short-, intermediate-, and long-term mortality rates improved following hospitalization for incident AMI among Medicare beneficiaries from 2008 to 2018?
Population
768 084 Medicare fee-for-service beneficiaries hospitalized with incident AMI
Comparison
Mortality trends across 2008 to 2018 evaluated across separate post-discharge time intervals
Design
Retrospective observational cohort study
Follow-up
Up to 2-3 years after discharge
Authors
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Declining post-AMI mortality in Medicare beneficiaries suggests improving outcomes; leaves open drivers and generalizability in this observational cohort.
Cohort (n=768,084)
Yes
Have short-, intermediate-, and long-term mortality rates improved following hospitalization for incident AMI among Medicare beneficiaries from 2008 to 2018?
Effect estimate: O/E ratio 0.77 (long term) (95% CI 0.75-0.79)
Mortality rates following incident AMI have improved across all time periods from hospitalization through 3 years post-discharge between 2008 and 2018 among Medicare beneficiaries.
Kini et al. (2023) conducted a cohort in Acute myocardial infarction (n=768,084). Hospitalization for incident AMI from 2008 to 2018 vs. Expected mortality based on 2008 rates was evaluated on Annual risk-standardized mortality ratios (observed over expected mortality) across acute to long-term periods (O/E ratio 0.77 (long term), 95% CI 0.75-0.79). Hospitalization for incident AMI between 2008 and 2018 was associated with declining risk-standardized mortality across all periods, including long-term (O/E ratio 0.77; 95% CI 0.75-0.79).
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