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. 2020 May 12;20(10):2750. doi: 10.3390/s20102750

Table 4.

Overall comparison of eye-tracking metrics.

Indicator CTA RTA Test of Statistical Difference (Mann-Whitney)
Median Mean SD Test of Normality (Shapiro-Wilk) Median Mean SD Test of Normality (Shapiro-Wilk)
Number of fixations 92 128.31 116.91 W(288) = 0.768
p < 0.001
64 82.29 69.68 W(329) = 0.734
p < 0.001
U = 34823.5
p < 0.001
Average duration of fixation 187 ms 184 ms 44 ms W(288) = 0.978
p < 0.001
208 ms 211 ms 47 ms W(329) = 0.963
p < 0.001
U = 33022
p < 0.001
Total fixation duration 17.02 s 25.83 s 25.9 s W(288) = 0.773
p < 0.001
13.04 s 17.89 s 17.21s W(329) = 0.699
p < 0.001
U = 39602.5
p < 0.001
Dwell time ratio 0.67% 0.66% 0.16% W(288) = 0.992
p = 0.106
0.75% 0.72% 0.17% W(329) = 0.929
p < 0.001
U = 35326
p < 0.001