Table 4.

Convergent validity: Item of RADAR vs. corresponding CAM item

RADAR items	CAM	Number of CAM assessments on which the CAM item is rated	% of agreement	Kappa [95% CI]
Item #1, “…was the patient drowsy?”	CAM 4, Level of consciousness, Hypoalert	1	83.9 (162/193)	0.36 [0.19-0.53]
		2	76.7 (148/193)	0.25 [0.11-0.39]
		3	65.8 (127/193)	0.15 [0.05-0.26]
Item #2, “…trouble following your instructions?”	CAM 2, Inattention	1	51.8 (100/193)	0.08 [0.03-0.12]
		2	43.5 (84/193)	0.08 [0.03-0.12]
		3	35.8 (69/193)	0.08 [0.03-0.12]
Item #2, “…trouble following your instructions?”	CAM 4 and 8, Hyper-alert/Agitation	1	85 (164/193)	0.16 [−0.02-0.33]
		2	85 (164/193)	0.16 [−0.02-0.33]
		3	85 (164/193)	0.16 [−0.02-0.33]
Item #3, “…movements slowed down?”	CAM 9, Psychomotor retardation	1	76.6 (147/192)	0.40 [0.25-0.54]
		2	76.0 (146/192)	0.43 [0.29-0.57]
		3	75.0 (144/192)	0.42 [0.28-0.56]

CAM: Confusion Assessment Method.