Comment by gopher_space
2 hours ago
I wouldn't bother critiquing methodology without current, masters-level experience in the domain. I make incorrect assumptions when I'm even narrowly outside my own lane, and end up asking questions that clearly demonstrate e.g. my inability to parse fig. 4a.
I wouldn't bother commenting if I were hallucinating figures. There is no figure 4a.
If you look at figure 4 in the supplemental material you also see, per your expertise, that covid vaccine protects against traumatic injury. However even adjusting for the protective effect against traumatic injury there is still quite a large protective effect against all-cause mortality. So the beneficial effect of the vaccine is not solely caused by its protective effect against traumatic injury.
Or it could be, bold proposition I know, that there is a difference between the groups that both protects against traumatic injury and protects against all-cause mortality, independently of the vaccine.