Figure 5. Predicted probabilities as a function of alertness score (SB+C+U) based on equation 17.
Left panel shows probabilities for specific outcomes (KSS = 6–9) and right panel shows probabilities for severe sleepiness (KSS≥7) with reference limits accounting for 75% and 90% of subjects (below the line) in addition to the average subject (i.e. 50% reference limit).