Table 2 Comparison of cognitive tests between the two groups

Digit forward

5.92 (0.28)

3.52 (0.65)

-6.442 (2.000)

<0.001

Digit backward

4.36 (0.49)

2.32 (0.69)

-6.129 (8.000)

<0.001

Immediate recall

11.88 (0.44)

3.84 (0.99)

-6.431 (0.000)

<0.001

Delayed recall

9.92 (0.28)

6.52 (1.94)

-6.262 (8.000)

<0.001

Verbal retention: similar pairs

5.00 (0.00)

3.44 (0.77)

-5.981 (37.500)

<0.001

Verbal retention: dissimilar pairs

14.84 (0.37)

5.96 (1.31)

-6.334 (0.000)

<0.001

Visual retention

12.88 (0.33)

6.24 (2.18)

-6.353 (0.000)

<0.001

Visual recognition

9.96 (0.20)

9.68 (0.48)

-2.551 (225.00)

0.011

Trail making A

39.80 (3.00)

77.24 (18.87)

-5.973 (6.000)

<0.001

Trail making B

79.72 (7.71)

150.76 (17.32)

-6.074 (0.000)

<0.001

Trail shift

39.92 (6.33)

73.52 (27.43)

-4.980 (56.000)

<0.001

Total FAB

9.60 (1.35)

18.00 (0.00)

-6.507 (0.000)

<0.001

ROCFT 1

35.36 (0.81)

31.64 (1.32)

-6.121 (2.500)

<0.001

ROCFT 2

27.72 (1.57)

14.36 (2.51)

-6.085 (0.000)

<0.001