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. 2017 Aug 31;56(1):78–84. doi: 10.2486/indhealth.2017-0069

Table 1. Descriptive statistics of fit factors between two models.

Existing mask TFN mask


Male (N=52) Female (N=48) Total (N=100) Male (N=52) Female (N=48) Total (N=100)






GMa GSDb GM GSD GM GSD GM GSD GM GSD GM GSD
Maximum 114 1.43 104 1.58 114 1.43 198 2.16 174 1.80 198 2.16
Mean 45 1.73 37 1.60 42 1.62 71 1.58 60 1.60 67 1.63 p=<0.001c
Median 38 1.41 32 1.45 37 1.43 66 1.48 55 1.45 61 1.43 p=<0.001c
Minimum 11 1.03 9 1.04 9 1.03 16 1.23 12 1.16 12 1.16

p=0.024d p<0.016d

The numbers of subjects for the existing mask having higher GMFFs than the TFN mask were six only.

a GM: geometric mean of three replicates with the same mask on the same subject

b GSD: geometric standard deviation of three replicates with the same mask on the same subject

c The results of t-test between the existing and the TFN masks

d The result of t-test between males and females