The Gas Stove Debate Hinges on a Common Statistical Misunderstanding
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New Data: Vitamin D Supplements Unlikely to Prevent COVID-19
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Mendelian randomization helps to tease out causality, and there does not seem to be a causal link between Vitamin D level and COVID-19
Read MoreMendelian Randomization: How it Works, and What it Reveals about Vitamin D
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An article in the BMJ uses the statistical approach to suggest that Vitamin D supplements might not prevent bone fractures.
Read MoreMarijuana: Really a gateway drug?
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It's hard to figure out whether marijuana is a gateway drug, because those wet blanket bioethicists think it would be "wrong" to randomize teenagers to toking or not. But a technique called instrumental variable analysis may hold the key to determining causality in this situation. Take a look at my full blog post, which is hosted here at MedPage Today.