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Calculator: Rheumatoid arthritis Disease Activity Score with Erythrocyte Sedimentation Rate (DAS28-ESR) in adults


Calculator: Rheumatoid arthritis Disease Activity Score with Erythrocyte Sedimentation Rate (DAS28-ESR) in adults

 
Input
 
ESR  
Global health (GH)  

 
Tender joint count (TJC)
   Shoulder
   Elbow
   Wrist

Right hand
  MCP 1-5
IP 1, PIP 2-5








   
 
 
 








  Knee
Shoulder  
Elbow  
Wrist  
Left hand
MCP 1-5
IP 1, PIP 2-5
 








 
 
 
 










Knee  
TJC          
    
Swollen joint count (SJC)
   Shoulder
   Elbow
   Wrist

Right hand
  MCP 1-5
IP 1, PIP 2-5








   
 
 
 








  Knee
Shoulder  
Elbow  
Wrist  
Left hand
MCP 1-5
IP 1, PIP 2-5
 








 
 
 
 










Knee  
SJC          

 
Result
 
Important: Inputs must be complete to perform calculation.

 
 
DAS28-ESR  
 
Decimal precision  

 

 

DAS28-ESR interpretation

 
DAS28-ESR <2.6: Remission
DAS28-ESR ≥2.6 and ≤3.2: Low disease activity
DAS28-ESR >3.2 and ≤5.1: Moderate disease activity
DAS28-ESR >5.1: High disease activity

 
 

 
Notes
  • In the hands, the joints that are evaluated include the 1st through 5th MCP joints, the IP joint of the thumb, and the 2nd through 5th PIP joints.
  • The GH parameter represents the patient's self-assessment of disease activity on a 0 to 100 scale where 100 means maximal disease activity.
  • A DAS-28 reduction by 0.6 represents a moderate improvement. A reduction by more than 1.2 represents a major improvement.
  • IP: interphalangeal joint; MCP: metacarpophalangeal joint; PIP: proximal interphalangeal joint.

 
Equations used
 
DAS28-ESR = ( 0.56 * sqr(Tender joint count (TJC))) + (0.28 * sqr(Swollen joint count (SJC))) + ( 0.7 * ln(ESR)) + (0.014 * Global health (GH))

 

 
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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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.

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