Variable

Group A

(n = 20)

Group B

(n = 30)

Test of sig.*

P-Value

è (cm/s)

12.5 (10, 15)

6 (5, 7)

Z = −5.193

<0.001

à (cm/s)

8.2 ± 2.1

11.3 ± 2.5

t = −4.583

<0.001

è/à

1.56 (1.27, 1.73)

0.53 (0.41, 0.75)

Z = −5.665

<0.001

E/è

6.84 ± 1.69

9.69 ± 3.08

t = −4.199

<0.001

S (cm/s)

9 (8, 9)

8 (7, 9)

Z = −2.051

0.04

IC time (ms)

72.9 ± 15.53

67.9 ± 14.78

t = 1.149

0.256

IR time (ms)

69.7 ± 13.4

77.1 ± 17.2

t = -1.622

0.111

S wave time (ms)

271 (266, 300)

266 (240, 289)

Z= −1.665

0.096