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Table 1 Psychometric properties of the Arabic CAM-ICU

From: Psychometric properties of the Arabic version of the confusion assessment method for the intensive care unit (CAM-ICU)

Property CAM-ICU by nurse
(n = 108)
CAM-ICU by intensivist
(n = 106)
Sensitivity (95%CI) 0.74 (0.63–0.84) 0.56 (0.44–0.68)
Specificity (95%CI) 0.98 (0.93–1.0) 0.92 (0.84–1.0)
Likelihood ratio, LR+ (95%CI) 29.4 (29.4–29.5) 7.1 (7–7.2)
Likelihood ratio, LR- (95%CI) 0.27 (0.15–0.39) 0.48 (0.36–0.60)
Positive predicted value (95%CI) 0.98 (0.94–1.0) 0.93 (0.85–1.0)
Negative predicted value (95%CI) 0.68 (0.56–0.81) 0.54 (0.42–0.66)
Pre-test probability 0.63 0.64
Pre-test odds 1.7 1.79
Post-test odds 50 12.7
Post-test probability 0.98 0.93
Delirium prevalence, CAM-ICU vs. psychiatrist clinical assessment 47.2% vs. 63% 38.7% vs. 64.2%
Accuracy 82.4% 68.9%
  1. CAM-ICU Confusion Assessment Method for the Intensive Care Unit, CI Confidence interval