All (n = 28)

AC (n = 13)

SCC (n = 10)

OT (n = 5)

P

Visual score

145.6 ± 23.4

144.6 ± 23.5

149.8 ± 25.1

140 ± 23.2

0.75

Kurtosis

−0.72 ± 0.29

−0.66 ± 0.31

−0.84 ± 0.23

−0.63 ± 0.35

0.26

Skewness

0.9 ± 0.18

0.91 ± 0.21

0.84 ± 0.12

0.96 ± 0.21

0.44