TDI with a mask, mean (SD) TDI without a mask, mean (SD)
P value
T with a mask, mean (SD)
T without a mask, mean (SD)
P value
D with a mask, mean (SD) D without a mask, mean (SD)
P value
I with a mask, mean (SD) I without a mask, mean (SD)
P value
Group 1
34.03 (5.6) 37.8 (5.82)
0.0215
8.72 (2.8) 10.2 (3.4)
0.109
11.9 (2.68) 13.8 (2.1)
0.004
13.4 (1.64) 13.8 (1.54)
0.726
Group 2
31.35 (4.44) 36.22 (3.92)
0.0020
6.5 (3.48) 8.6 (3.15)
0.021
10.4 (1.71) 13.7 (1.41)
0.02
14.4 (1.17) 13.9 (0.99)
0.125