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).
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?
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.
Effect estimate: O/E ratio 0.77 (long term) (95% CI 0.75-0.79)
Background Advances in technology and care quality have transformed the care of acute myocardial infarction (AMI), but little is known about trends in mortality rates across separate time periods after hospitalization. Methods and Results We identified all Medicare fee-for-service beneficiaries hospitalized with incident AMI from 2008 to 2018. We calculated unadjusted mortality rates by dividing the number of all-cause deaths by the number of patients with incident AMI for the following time periods: acute (in hospital), post acute (0-30 days after hospital discharge), short term (31 days to 1 year after discharge), intermediate term (1-2 years after discharge), and long term (2-3 years after discharge). Each period was considered separately (ie, patients who died during one period were not counted in subsequent periods). Using logistic regression to account for differences in patient characteristics, we calculated annual risk standardized mortality ratios defined as observed over expected mortality based on 2008 rates. Among 768 084 patients with incident AMI (mean age 81 years, 48% male, 87% White), declines in observed-to-expected mortality ratios were observed for each time period: acute (0.68 95% CI, 0.66-0.71), postacute (0.72 95% CI, 0.71-0.75), short term (0.77 95% CI, 0.75-0.78), intermediate term (0.79 95% CI, 0.77-0.81), and long term (0.77 95% CI, 0.75-0.79). Declines were observed both for patients with and without ST-segment-elevation AMI. Conclusions For patients with incident AMI, there have been improvements in mortality rates across periods spanning the hospital stay through 3 years after discharge, reflecting advances in AMI care from hospitalization through long-term outpatient follow-up.
Kini et al. (Thu,) 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).