Table 3.
Screening prformance characteristics of Cincinnati stroke scale in prediction of stroke probability (95% confidence interval)
| Variables | Facial droop | Weakness | Dysarthria | Cincinnati |
|---|---|---|---|---|
| Sensitivity | 50.1 (55.4-44.9) | 73.0 (68.2-77.0) | 51.5 (46.2-56.7) | 93.2 (90.1-95.5) |
| Specificity | 84.0 (74.1- 1.2) | 63.0 (51.5-73.4) | 88.9 (80.0-94.8) | 51.8 (40.5-63.1) |
| PPV | 93.4 (89.0-96.4) | 83.9 (85.9-93.1) | 95.4 (91.5-97.9) | 89.8 (86.3-92.6) |
| NPV | 27.1 (21.7-33.0) | 34 (26.5-42.2) | 28.8 (23.3-34.8) | 62.7 (55.5-72.4) |
| LR+ | 3.10 (1.9-5.2) | 2.0 (1.5-2.6) | 4.60 (2.5-8.6) | 1.90 (1.5-2.4) |
| LR- | 0.60 (0.5-0.7) | 0.40 (0.3-0.5) | 0.55 (0.5-0.6) | 0.13 (0.09-0.2) |
PPV: positive predictive value, NPV: negative predictive value, LR+: positive likelihood ratio, LR-: negative likelihood ration