95% Conf. interval of the difference

Study group

Mean ± SD

Placebo group

Mean ± SD

Mean difference

T value

P value

Lower

upper

Preopeartive period: Anxiety VAS

9.6 ± 1.7

9.3 ± 2.5

0.32

0.79

0.428

−0.47

1.10

Preoperative period: Pain VAS

7.1 ± 1.9

6.0 ± 1.8

1.03

3.07

0.203

0.37

1.69

Intraoperative period: Pain VAS by ext observer

1.1 ± 0.5

1.9 ± 0.9

−0.48

−3.39

0.001

−0.77

−0.20

Intraoperative period: Pain by patients

3.2 ± 2.1

6.6 ± 1.8

−3.40

−9.52

0.000

−4.11

−2.69

Postoperative period: Satisfaction visual Analogue

8.8 ± 1.9

5.2 ± 3.4

3.62

7.18

0.000

2.62

4.61