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Table 1 The original Wells score and simplified Wells score for pulmonary embolism

From: A comparative analysis of the diagnostic performances of four clinical probability models for acute pulmonary embolism in a sub-Saharan African population: a cross-sectional study

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)

 
  1. DVT Deep venous thrombosis, PE Pulmonary embolism