The above post might have been thinking of medical error:

https://www.hopkinsmedicine.org/news/media/releases/study_su...

"Malpractice" might be harder to measure since it's a legal term.

They probably meant medical error which kills like 200k people/y in the US. Malpractice is I think more like a legal/administrative judgement that indicates culpability that may or may not exist in a specific error.