QTd

Z

P

The study group

58.37 ± 15.54

168.351

<0.01

The control group

32.65 ± 11.23

Z

P

A with B

0.3256

0.732

A with C

69.567

<0.01

A with D

88.751

<0.01

A with E

0.7645

0.043

B with C

54.453

<0.01

B with D

78.097

<0.01

B with E

5.156

<0.01

C with D

4.897

<0.01

C with E

12.476

0.01

D with E

21.543

<0.01