Table 3 Accuracy of SQ1 and of SQ2
From: Screening with the double surprise question to predict deterioration and death: an explorative study
Total, n | Died, n | Survived, n | Sensitivitya, % (95% CI) | Specificitya, % (95% CI) | PPVa, % (95% CI) | NPVa, % (95% CI) | |
|---|---|---|---|---|---|---|---|
SQ1 | |||||||
No | 161 | 24 | 137 | 24/26 = 92.3% (74.9–9.1%) | 129/266 = 48.5% (42.4–54.7%) | 24/161 = 14.9% (9.8–21.4%) | 129/131 = 98.5% (94.6–99.8%) |
Yes | 131 | 2 | 129 | ||||
Total | 292 | 26 | 266 | ||||
SQ2b | |||||||
Yes | 22 | 10 | 12 | 10/24 = 41.7% (22.1–3.4%) | 125/137 = 91.2% (85.2–95.4%) | 10/22 = 45.5% (24.4–67.8%) | 125/139 = 89.9% (83.7–94.4%) |
No | 139 | 14 | 125 | ||||
Total | 161 | 24 | 137 | ||||