Table 5.

Concurrent validity of RADAR items compared with a DSM-IV-TR criterion-defined delirium

RADAR items	Sensitivity % [95% CI]	Specificity % [95% CI]	Positive, predictive value, % [95% CI]	Negative, predictive value, % [95% CI]
Item #1: “…was the patient drowsy?”	26.1 [10.2-48.4]	94.1 [89.4-97.1]	37.5 [15.2-64.6]	90.4 [85.1-94.3]
Item #2: “…trouble following your instructions?”	21.7 [7.5-43.7]	86.5 [80.4-91.2]	17.9 [6.1-36.9]	89.1 [83.3-93.4]
Item #3: “…movements slowed down?”	65.2 [42.7-83.6]	76.3 [69.2-82.5]	27.3 [16.1-41.0]	94.2 [88.8-97.4]

CI: Confidence interval.