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Table 1 Logistic regression table with coefficients and confidence intervals for each propofol concentrations*.

From: Brain function assessment in different conscious states

       95% CI
Predictor Coef SE Coef Z P Odds Ratio Lower Upper
Logit 1:
(1.2µg/mL / 1.6 µg/mL)
Constant
BIS scores
-1.892
0.021
0.167
0.002
-11.30
9.86
0.000
0.000
1.02 1.02 1.03
Logit 2:
(0.8 µg/mL / 1.6 µg/mL)
Constant
BIS scores
-7.875
0.098
0.191
0.002
-41.24
41.98
0.000
0.000
1.10 1.10 1.11
Logit 2:
(0.4 µg/mL / 1.6 µg/mL)
Constant
BIS scores
-18.485
0.215
0.289
0.003
-64.04
65.06
0.000
0.000
1.24 1.23 1.25
Logit 2:
(0 µg/mL / 1.6 µg/mL)
Constant
BIS scores
-20.329
0.226
0.397
0.004
-51.15
51.04
0.000
0.000
1.25 1.24 1.26
  1. *Propofol dosage 1.6 µg/mL has been chosen as the reference level. The Coef. (coefficient) column shows the change in the logit of the given dosage compared to dosage 1.6 µg/mL when BIS values increse by 1 unit. BIS, bispectral index; CI, confidence interval; SE, standard error.