Table 6.

Concurrent validity of RADAR compared with a DSM-IV-TR criterion-defined delirium according to the number of daily RADAR administrations

Number of RADAR administrations (N)	Sensitivity % [95% CI]	Specificity % [95% CI]	Positive, predictive value, % [95% CI]	Negative, predictive value, % [95% CI]
1 to 4, (193)	65.2 [42.7-83.6]	71.2 [63.7-77.9]	23.4 [13.8-35.7]	93.8 [88.1-97.3]
1-2, (80)	58.3 [27.7-84.4]	77.9 [66.2-87.1]	31.8 [13.9-54.9]	91.4 [81.0-97.1]
3-4, (113)	72.7 [39.0-94.0]	66.7 [56.6-75.7]	19.0 [8.6-34.1]	95.8 [88.1-99.1]

CI: Confidence interval.