. 2008 Feb 18;12(1):R16. doi: 10.1186/cc6790

Table 4.

Mean lengths of stay for delirious and non-delirious patients (CAM-ICU) and the four categories of the NEECHAM Confusion Scale

CAM-ICU	Mean length of stay in days (SD)	P value^a	NEECHAM scale	Mean length of stay in days (SD)	P value^b
Delirium	17.5 (14.5)	<0.001	Delirium	18.5 (15.1)	<0.001
			Mild confusion	7.0 (6.1)
No delirium	5.0 (5.9)		At risk	4.0 (2.7)
			Normal	2.8 (1.6)

^aP value was calculated with the independent t test. ^bP value was calculated with one-way analysis of variance. CAM-ICU, Confusion Assessment Method for the Intensive Care Unit; NEECHAM, Neelon and Champagne; SD, standard deviation.