Table 3 Bispectral index scale (BIS) values in both groups

After induction

66.8 ± 6.5

67.1 ± 5.2

0.894

10 min.

61.7 ± 5.4

65.6 ± 4.8

0.055

20 min.

56.1 ± 3.2

63.7 ± 2.3

0.041*

30 min.

52.6 ± 5.4

56.2 ± 3.6

0.036*

40 min.

52.3 ± 4.5

55.3 ± 2.4

0.045*

50 min.

48.1 ± 4.7

55.2 ± 4.6

0.040*

60 min.

45.9 ± 3.4

53.2 ± 4.9

0.047*

70 min.

45.2 ± 1.3

52.6 ± 6.1

0.043*

80 min.

46.3 ± 1.5

51.1 ± 5.6

0.041*