EBMcalc Logo
   INTRO    EQUATIONS    CRITERIA    DECISION    CONVERT    SPECIALTIES    REFS    SEARCH    NEW    CONTACT
 
  COVID-19 Symptom-Based C19 Rule for Diagnosis

 
Symptoms

Loss of taste or smell (2 points)

Cough and fever (1 point)

Chest tightness or wheezing (-1 point)

 
Total Criteria Point Count:
 
     
 
Include literature references: Yes   No

 
  C19 Rule Interpretation

 
3 points: LR+ 15 for diagnosis of COVID-19
2 points: LR+ 4.2 for diagnosis of COVID-19
1 point: LR+ 1.2 for diagnosis of COVID-19
0 points: LR+ 0.7 for diagnosis of COVID-19
-1 points: LR+ 0.1 for diagnosis of COVID-19

 
Notes
  • When the odds (by prevalence) of COVID-19 is known, these odds may be mutiplied by the calculated LR+ to obtain the post-test odds of COVID-19 in individuals with the symptoms above.
  • LR+: likelyhood ratio of a positive test.

 
References
  1. Smith DS, Richey EA, Brunetto WL. A Symptom-Based Rule for Diagnosis of COVID-19. SN Compr Clin Med. 2020 Oct 24:1-8. PubMed ID: 33134843 PubMed Logo

 
Legal Notices and Disclaimer

 
All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.
 
EBMcalc is Copyright © 1998-2021 Foundation Internet    [Build 264217 v21.3]