Variable

Control group No. = 30

Patients group No. = 30

Chi-square test

No.

%

No.

%

X²

P-value

V/A Rt

Negative

26

86.7%

12

40.0%

14.067

0.001

Positive

4

13.3%

18

60.0%

V/A Lt

Negative

26

86.7%

8

26.7%

21.991

0.001

Positive

4

13.3%

22

73.3%

Degree of V/A R t

Mean ± SD

No. = 30

Mean ± SD

No. = 30

t

P-value

0.03 ± 0.07

0.29 ± 0.34

4.102

0.001

Degree of V/A Lt

0.03 ± 0.07

0.29 ± 0.30

4.623

0.001