| Temperature >38.3°C (100.9°F) | Yes No |
| Exposure to known streptococcal pharyngitis contact | Yes No |
| Pharyngeal or tonsillar exudates | Yes No |
| Enlarged or tender nodes | Yes No |
| Recent cough | Yes No |
The Walsh Clinical Prediction Rules were developed in a population that had 24% positive cultures.
Overview:
This rule consists of 5 items from which the score is summed
| Points | Clinical factor or historical item |
|---|---|
| +1 | Temperature >38.3°C (100.9°F) |
| +1 | Exposure to known streptococcal pharyngitis contact |
| +1 | Pharyngeal or tonsillar exudates |
| +1 | Enlarged or tender nodes |
| -1 | Recent cough |
Interpretation:
| Score | % Probability of patient having a positive culture for GABHS |
|---|---|
| -1 | 4.6% |
| 0 | 15.9% |
| 1 | 44.4% |
| 2 | 57.1% |
| 3 | 83.3% |
GABHS = Group A beta-hemolytic streptococcus
Reference:
Mcginn TG, Deluca J, Ahlawat SK, et al. Validation and modification of streptococcal pharyngitis clinical prediction rules. Mayo Clin Proc. 2003;78(3):289-93 .