In this blog, Leonardo provides 5 interpretations that you should consider when you read or hear about a reported association in observational studies.
If you’ve read a newspaper or seen the news over the couple of weeks there’s a good chance you’ll have seen a few pretty terrifying headlines related to Alzheimer’s disease… So can you really catch Alzheimer’s disease from blood transfusions, dental visits or surgery? In short: no. Here’s how we know: 1. This was a very small, observational study 8 patients were studied in a purely observational manner; there was no randomisation, control group or blinding. The data is comprised of
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