Figure 2. Percentage of Patients with Unplanned Intubation by the Unplanned Intubation Risk Index (UIRI) Score.
The percentage of patients who experienced unplanned intubation for each scoring category in the UIRI is shown for both the derivation and validation cohorts. T bars indicate standard error. *Scores 17 and 18 were combined because of the small numbers of unplanned intubation cases in the UIRI 18 group (2 in the derivation cohort and 1 in the validation cohort).