Figure 2.

Distribution of events between stays. The distribution of events between stays as tagged by the expert reviewers or by the automatic tagging system. More than one intubation event was defined as occurring if an intubation event occurred at least 12 hours after a previous extubation event during that intensive care unit (ICU) stay. Similarly, a vasopressor initiation event was included if it was the first vasopressor initiation during a particular ICU stay, or if it was initiated at least 6 hours after ending previous vasopressor administration.