Brain function assessment in different conscious states

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

						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

*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.