Table 2.

Rates of delirium and frequencies of screening with RASS and CAM-ICU.

Primary Outcome
Incidence, or rate, of patients who were found to have delirium at least once during their admission.	11.3% (75/665)
Secondary Outcomes of screening
Total RASSs performed	17,273
Number of RASSs performed per patient per day (average number of RASSs/average ICU LOS)	8.2
Number of RASSs completed per patient during their ICU stays
Median (IQR)	12 (5–27)
Mean (SD)	26 (52)
Time between RASS score evaluation (Average number of RASSs/24 h)	2.9 h
Number of patients who were not assessed with RASS at any time during their ICU stays	8.4% (56/665)
RASS score value
Median (IQR)	−0.2 (−1.2 to 0.0)
Mean (SD)	−0.55 (1.5)
Number of patients with a mean RASS score < −3 (cannot be assessed with CAM-ICU)	6.2% (41/665)
Total CAM-ICUs performed	1248
Number of CAM-ICUs performed per patient per day (Average number of CAM-ICUs/average ICU LOS)	0.6
Number of CAM-ICUs completed per patient during their ICU stays
Median (IQR)	1 (0–2)
Mean (SD)	1.9 (3.1)
Time between CAM-ICU evaluation (Average number of CAM-ICUs/24 h)	40 h
Number of patients who were
assessed with CAM-ICU at least once while in the ICU	59.4%(395/665)
not assessed with CAM-ICU at any time while in the ICU	40.6% (270/665)
Rate of delirium based on assessments (Positive CAM-ICU results/Total CAM-ICU results)	14.8% (185/1248)
Rate of patients who had at least one positive CAM-ICU result out of those who were assessed with CAM-ICU	19% (75/395)

CAM-ICU: Confusion Assessment Method-ICU; ICU: Intensive Care Unit; IQR: Interquartile Range; LOS: length of stay; RASS: Richmond Agitation Sedation Scale; SD: Standard Deviation.