Table 5 Williams Prediction Rule Based on Signs and Symptoms of ABRS [25]
From: Canadian clinical practice guidelines for acute and chronic rhinosinusitis
Sign or Symptom | Likelihood Ratio (LR) (present) |
|---|---|
Maxillary toothache | 2.5 |
Poor response to antihistamines/decongestants | 2.1 |
Purulent nasal secretions | 2.1 |
Abnormal transillumination | 1.6 |
Colored nasal discharge | 1.5 |