![]() It’s a good place to go if you’re wondering if antidepressants work, if blood pressure medications help, if therapy does anything, and lots more. ![]() With something as complex as masks and respiratory disease, the right tool for the job isn’t one study but many: a meta-analysis of a number of different smaller studies to determine what effect is detectable in aggregate across the body of research.įor medical questions, a major source of high-quality, reputable meta-analyses is Cochrane, a UK-based nonprofit that publishes long and comprehensive meta-analyses of current evidence on medical and therapeutic interventions. ![]() Here’s a seemingly simple question with a deeply unsimple answer: Do the masks that so many of us spent more than two years wearing actually prevent the spread of Covid-19? There have been dozens of studies trying to answer that question, and often they point in different directions, or are too small to find the effect they’re looking for.
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