Table 1 Psychometric properties of the Arabic 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% |