Table 2.
Predictive power of Wells score and its elements.
| Data-defined cutoff∗ | Odds ratio† (95% CI) | P value† | Sensitivity† | Specificity† | Sensitivity + specificity | |
|---|---|---|---|---|---|---|
| Wells score (continuous) | ≥5 | 4.07 (2.76, 6.05) | <0.001 | 0.61 | 0.72 | 1.33 |
| Wells Score > 4 | — | 3.11 (2.08, 4.75) | <0.001 | 0.71 | 0.55 | 1.27 |
| HR > 100 | — | 1.21 (0.83, 1.77) | 0.335 | 0.56 | 0.48 | 1.05 |
| Stasis (+ versus −) | — | 1.21 (0.82, 1.78) | 0.332 | 0.39 | 0.66 | 1.04 |
| Signs of DVT (+ versus −) | — | 4.41 (2.84, 6.80) | <0.001 | 0.34 | 0.89 | 1.24 |
| Hemoptysis (+ versus −) | — | 1.54 (0.56, 3.61) | 0.358 | 0.05 | 0.97 | 1.02 |
| Cancer (+ versus −) | — | 1.45 (0.97, 2.2) | 0.069 | 0.35 | 0.73 | 1.08 |
| Previous DVT/PE (+ versus −) | — | 2.05 (1.27, 3.23) | 0.003 | 0.23 | 0.87 | 1.10 |
∗Value at which probability of PE predicted by logistic regression model equals or first exceeds observed frequency of PE. †At data-defined cutoff, where applicable.