Tag: influenza

  • Control yourself: the self-controlled case series

    Control yourself: the self-controlled case series

    Does influenza increase the risk of acute myocardial infarction (AMI)? Do bivalent mRNA COVID-19 vaccines cause acute ischemic stroke? Relevant questions, but difficult to answer. Incidences of both outcomes are low, precluding an answer from randomised trials (in case of vaccination) and analyses from observational studies will be flawed by…

  • Comparing COVID-19 and influenza

    Comparing COVID-19 and influenza

    Last week, this paper in Lancet ID generated heated (and mostly negative) discussions on X, but I suspect that selection bias may have had a role in that. What was (and was not) investigated? And how?