46 (18.1)  
     Commonly (about 50%)    25 (19.8)    68 (26.9)  
     Sometimes (about 25%)    17 (13.5)    90 (35.6)  
     Rarely (less than 10%)  9 (7.1)  24 (9.4)
Practiced mask fit check  42 (33.3)  44 (17.4)  < 0.001
Hand hygiene