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[–]jamesK_3rd[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

[–]slushpilot 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

In the control arm, 170/458 (37%) used medical masks, 38/458 (8%) used cloth masks, and 245/458 (53%) used a combination of both medical and cloth masks during the study period.

These are pretty small numbers for a randomized trial: only 38 participants using cloth masks.