Table 2.

Descriptions of delirium trajectories

Trajectories	Description
Mild-brief	Low CAM-ICU-7 (CAM-ICU-7 score: 1–2) across all time points
Severe-rapid recovers	Initial severe CAM-ICU-7 score with a sharp decline/resolution of delirium symptoms within 60 h (CAM-ICU-7 score of 6–7 indicating severe, declining to a mild-moderate score of 3–5, followed by a subsyndromal symptom score of 1–2)
Mild-accelerating	Mild CAM-ICU-7 scores (CAM-ICU-7 score: 1–2) that exponentially increased to moderate to severe delirium (CAM-ICU-7 score: 5–7) over the 7-d assessment period
Severe-slow recovers	Severe CAM-ICU-7 scores (CAM-ICU-7: 6–7) that gradually declined to mild delirium (CAM-ICU-7 score: 3–5) over the 7-d assessment period
Severe-nonrecovers	Severe CAM-ICU-7 scores (CAM-ICU-7: 6–7) that persisted over the 7-d assessment period

Definition of abbreviation: CAM-ICU-7 = Confusion Assessment Method for the Intensive Care Unit 7

The table describes the delirium trajectories that are illustrated in Figure 1. CAM-ICU-7 scoring system: 0 = no delirium symptoms; 1–2 = subsyndromal delirium; 3–5 = mild-to-moderate delirium; 6–7 = severe delirium.