2013 ACR/EULAR Systemic Sclerosis Classification Criteria Calculator

Overview

Applies the 2013 weighted systemic sclerosis classification criteria.

Clinical Significance

A total score of 9 or more classifies definite systemic sclerosis; proximal finger skin thickening alone scores 9.

When to Use

• Use as structured clinical decision support when the required data are available and reliable.

How It Is Calculated

• The displayed variables are combined using the published equation or weighted point system.

Interpretation

• A total score of 9 or more classifies definite systemic sclerosis; proximal finger skin thickening alone scores 9.

Worked Example

Enter verified patient data in the displayed units; MedicalC applies the published equation or point system.

Limitations

• Classification and prognostic tools can be misapplied outside their validated population.
• Missing, estimated or non-contemporaneous data may materially change the result.

Clinical Pearls

• Document the input values, units, date and clinical setting with the result.
• Use serial scores only when the same instrument and measurement method are used consistently.

Common Mistakes

• Using the tool without confirming entry criteria.
• Selecting overlapping findings that should be represented by the highest-scoring item only.
• Treating a classification threshold as a standalone diagnosis.

References

1. van den Hoogen F et al. Ann Rheum Dis. 2013;72:1747-1755. — Primary or supporting reference for the implemented model.