Inconclusive results, missing data, variable adherence, patient-reported findings on home tests, no blinding, and no assessment of whether masks could decrease disease transmission from mask wearers to others.
I don't think doing the study was a waste of time or anything, but the results are inconclusive enough to be ignorable.
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[ 3.1 ms ] story [ 15.6 ms ] threadI don't think doing the study was a waste of time or anything, but the results are inconclusive enough to be ignorable.