the only thing you learn from an observational study is how you should go about doing your randomized controlled trial, yet now these morons are making not just conclusions but also public policy on merely observational data, skipping the most important step.
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(Old Spike)
the only thing you learn from an observational study is how you should go about doing your randomized controlled trial, yet now these morons are making not just conclusions but also public policy on merely observational data, skipping the most important step.
no control group = not proof of anything.