Table 3.

Subgroup analysis for the incidence of delirium with CAM-ICU and NEECHAM Confusion Scale

n = 172 patients		CAM-ICU	P value	NEECHAM scale	P value
Age	Under 65 years, n = 98	22.4%	0.31	23.5%	0.24
	65 years or older, n = 74	16.2%		16.2%
Gender	Male, n = 102	18.6%	0.65	19.6%	0.77
	Female, n = 70	21.4%		21.4%
Category of admittance	Cardiac surgery, n = 40	15.0%	0.20	10.0%	0.08
	Other surgery, n = 64	15.6%		18.8%
	Internal medicine, n = 68	26.5%		27.9%

P value of the difference was calculated with the chi-square test. CAM-ICU, Confusion Assessment Method for the Intensive Care Unit; NEECHAM, Neelon and Champagne.