[defrost]

It's literally an observational summary of all filed provisional death certificates between between April 1, 2012, and March 31, 2022 limited to those that specifically mention "heart attacks" (AMI - acute myocardial infarctions) [0].

As those death certificates don't mention measles, rubella, flu, or COVID vaccinations, etc. they don't feature in a pure numerical grouping and summary.

If you feel that vaccination status play a part worthy of notice then you are free to pull the data yourself [1] and cross reference those deaths against vaccination status data.

Very few published studies are the be all to end all, they are each at best parts of a greater picture, what this study does highlight is that AMI's trended downwards for almost a decade and then rose as COVID spread.

Clearly there is more work to be down here - as this study signposts.

[0] https://onlinelibrary.wiley.com/doi/10.1002/jmv.28187

[1] https://wonder.cdc.gov/mcd-icd10-provisional.html