meta|Evidence - COVID-19
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face mask (n=-9) vs. control (n=-9)
cluster randomized trial risk of bias NA
face mask /- hand hygiene
control
3 arms : face mask (n=378), face mask hand hygiene (n=367), control (n=552)
preventing respiratory virus transmission
open-label, randomized
USA
face mask (n=52) vs. control (n=53)
cluster randomized trial risk of bias NA
mask
control
preventing respiratory virus transmission
open-label, randomized
france, multicentric (3)
face mask (n=-9) vs. control (n=-9)
randomized controlled trial risk of bias NA
surgical masks or non-fit-tested P2 masks
no masks
preventing respiratory virus transmission
face mask (n=-9) vs. control (n=-9)
cluster randomized trial risk of bias NA
Medical Mask, N95 Fit tested, N95 non-fit tested
no mask
preventing respiratory virus transmission
Respiratory virus
15 Beijing hospitals
Cluster randomized trial
Cluster randomized trial
face mask (n=123) vs. control (n=122)
cluster randomized trial risk of bias NA
medical maskused by sick individuals with influenza-like illness
control
preventing respiratory virus transmission
face mask (n=1623) vs. control (n=1642)
cluster randomized trial risk of bias NA
mask or/and hand hygiene
participants were asked to wear their masks for at least six hours per day while in their residence hall adn encouraged to wear it outside
no mask
3 arms study : mask (n=1623), mask hand hygiene (n=1839), control (=1642)
preventing respiratory virus transmission
Influenza virus
randomized
USA, multicentric (37)
Cluster randomized trial
Cluster randomized trial
face mask (n=-9) vs. control (n=-9)
cluster randomized trial risk of bias NA
paper surgical face masks
control
preventing respiratory virus transmission
face mask (n=26) vs. control (n=30)
cluster randomized trial risk of bias NA
Mask
no mask
preventing respiratory virus transmission
Influenza virus
Germany
Cluster randomized trial
Cluster randomized trial
face mask (n=-9) vs. control (n=-9)
cluster randomized trial risk of bias NA
use of 50 surgical facemasks worn over five days
no facemasks
preventing respiratory virus transmission
face mask (n=-9) vs. control (n=-9)
randomized controlled trial risk of bias NA
Mask
no mask
preventing respiratory virus transmission
Respiratory virus
Australia
Cluster randomized trial
Cluster randomized trial
face mask (n=-9) vs. control (n=-9)
cluster randomized trial risk of bias NA
mask
control
preventing respiratory virus transmission
face mask (n=-9) vs. control (n=-9)
randomized controlled trial risk of bias NA
mask
no mask
preventing respiratory virus transmission
Influenza virus
China (Hong Kong)
Cluster randomized trial
Cluster randomized trial
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