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A 2×2 table for the validation cohort
| Cut-off point | Delirium | No delirium | Total |
|---|---|---|---|
| 0 (negative) | 5 | 137 | 142 |
| ≥1 (positive) | 71 | 89 | 160 |
| 76 | 226 | 302 |
Sensitivity=93.4%, 95% CI 85.5% to 97.2%.
Specificity=60.6%, 95% CI 54.1% to 66.8%.
Positive predictive value =44.4%, 95% CI 36.9% to 52.1%.
Negative predictive value=96.5%, 95% CI 92% to 98.5%.
