You wouldn’t expect more (or less) primary causes if more secondary causes were reported in multifactorial deaths. I’d imagine the fact that in the US CMS adopted ICD-10 in 2015 and the rapid rise after would make that obvious enough. Unless you believe there’s some pre-COVID etiology for malnutrition that explains the jump I’m not seeing.
You wouldn’t expect more (or less) primary causes if more secondary causes were reported in multifactorial deaths. I’d imagine the fact that in the US CMS adopted ICD-10 in 2015 and the rapid rise after would make that obvious enough. Unless you believe there’s some pre-COVID etiology for malnutrition that explains the jump I’m not seeing.