Key result
Enrollment in Medicare Advantage vs traditional Medicare was associated with lower 30-day mortality for acute MI in 2009, but not by 2018 (17.7% vs 17.8% for STEMI; difference 0.0 percentage points).
Why the study?
Medicare Advantage coverage has grown substantially, but whether these plans provide care similar to traditional Medicare for patients presenting with specific clinical conditions like acute myocardial infarction was unknown.
Does enrollment in Medicare Advantage compared to traditional Medicare reduce 30-day mortality in patients with acute myocardial infarction?
Cohort (n=2,227,502)
Yes
Does enrollment in Medicare Advantage compared to traditional Medicare reduce 30-day mortality in patients with acute myocardial infarction?
Effect estimate: difference 0.0 percentage points (95% CI -0.7 to 0.6)
Absolute Event Rate: 17.7% vs 17.8%
Absolute Risk Reduction: 0%
While Medicare Advantage was associated with modestly lower 30-day mortality for acute MI in 2009 compared to traditional Medicare, this mortality difference was no longer statistically significant by 2018.
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30-day mortality similar between Medicare Advantage and traditional Medicare for AMI by 2018; observational data leave open whether enrollment influences outcomes.
Landon et al. (2022) conducted a cohort in acute myocardial infarction (n=2,227,502). Medicare Advantage vs. traditional Medicare was evaluated on adjusted 30-day mortality (difference 0.0 percentage points, 95% CI -0.7 to 0.6). Enrollment in Medicare Advantage vs traditional Medicare was associated with lower 30-day mortality for acute MI in 2009, but not by 2018 (17.7% vs 17.8% for STEMI; difference 0.0 percentage points).
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