Table 2: The predicted blood and the predicted effect-site concentration, BIS value and time for loss of consciousness

Time of induction	8:30	14:00 - 16:00
Blood concentration (µg/mL)	4.5 ± 0.8	4.5 ± 0.6
Effect-site concentration (µg/mL)	2.1 ± 0.7	2.1 ± 0.8
BIS value	52.1 ± 12.9	49.9 ± 12.4
Time (sec)	171.1 ± 71.3	171.4 ± 70.9

The data are expressed as the mean ± the standard deviation.
BIS: Bi-Spectral Index