Table 2

Inter-individual medians and interquartile ranges and intra-individual ranges of interquartile ranges of each of the 10 patients' individual 20-minute epochs. BIS^®-Dex/Remi = dexmedetomidine and remifentanil; EMG = electromyogram from BIS^® (absolute power in dB (70 to 100 Hz)); IQR = interquartile ranges; Midi/Remi = midazolam and remifentanil; RE = response entropy; SE = state entropy

Inter (between)-individual

Intra (within)-individual (range of all within variations)

Median

IQR

IQR range

Median data points

Mida/Remi

Baseline

BIS^®

94.7

4.25

0 to 9

116.5

SE

79.9

5.75

2 to 15

115

RE

91.6

5.35

2 to 19.25

115

BIS^®-EMG

44

3.5

2 to 9

116.5

RS 2

BIS^®

85.0

6.96

3 to 12

117

SE

73.0

13.35

3 to 36

116

RE

83.2

13.15

2 to 38.5

116

BIS^®-EMG

39

6.0

3 to 10

117

RS 3

BIS^®

74.4

9.25

4 to 20

117

SE

57.6

13.35

5 to 26

118

RE

65.6

14.38

6.25 to 21

118

BIS^®-EMG

35

2.1

0 to 5

117

RS 4

BIS^®

69.0

7.48

2.75 to 14.75

118

SE

53.9

14.38

6 to 24.75

118

RE

63.6

16.18

9 to 24.75

118

BIS^®-EMG

31

1.6

0 to 4

118

Dex/Remi

Baseline

BIS^®

93.8

5.10

1 to 11

120

SE

79.9

8.00

2 to 23

118

RE

91.0

7.75

2 to 25.5

118

BIS^®-EMG

51

5.5

2 to 12

120

RS 2

BIS^®

84.8

7.58

1 to 14

119

SE

69.8

15.47

4 to 29.75

118

RE

81.3

16.08

5 to 31

118

BIS^®-EMG

34

3.9

2 to 7

119

RS 3

BIS^®

69.0

9.26

4 to 16

119

SE

42.9

12.80

5 to 37

118

RE

49.3

14.98

8 to 32.75

118

BIS^®-EMG

32

3.2

0 to 8

119

RS 4

BIS^®

50.3

8.95

2 to 14

120

SE

27.3

7.03

2 to 20.25

118

RE

30.2

8.95

2 to 25.75

118

BIS^®-EMG

30

1.6

0 to 5

120

Haenggi et al. Critical Care 2009 13:R20   doi:10.1186/cc7723