Opinion: Do masks work? Randomized controlled trials are the worst way to answer the question
STAT
MAY 2, 2023
Early in the Covid-19 pandemic, before we had vaccines and effective medical procedures, the only ways to prevent transmission of the virus were behavioral measures like face masks and social distancing. There was (and continues to be) a desperate hunger for definitive studies telling us how well specific measures would work, with specific publics, in specific settings, for specific strains of the novel and changing virus.
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