Predictive variables | Original Wells score | Simplified Wells score |
---|---|---|
Previous PE or DVT | 1.5 | 1 |
Heart rate > 100 bpm | 1.5 | 1 |
Recent surgery or immobilization | 1.5 | 1 |
Clinical signs of DVT | 3 | 1 |
Alternative diagnosis less likely than PE | 3 | 1 |
Haemoptysis | 1 | 1 |
Cancer | 1 | 1 |
Pretest probability; | Pretest probability; | |
0–1: low | ≤ 1: PE unlikely (low) | |
2–6: moderate | > 1: PE likely (high) | |
≥ 7: high | ||
Dichotomized score: | ||
≤ 4: PE unlikely (low) | ||
> 4: PE likely (high) |