Rheumatology Clinic

Doctor GuidesFor clinicians

Clinical Calculators & Scoring Tools

A structured collection of the rheumatology classification criteria and disease activity indices I use in daily practice. Each tool includes the original source, safety notes and a copyable result summary. Built for GPs, physicians and allied clinicians.

For healthcare professionals only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.

Rheumatoid Arthritis / Early Inflammatory Arthritis

Classification, disease activity and prediction tools for RA and early inflammatory arthritis.

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Classification criteria

2010 ACR/EULAR Classification Criteria for RA

Score joint involvement, serology, acute-phase reactants and duration to classify RA.

Disease activity score

28-joint disease activity score using CRP, tender/swollen joint counts and patient global.

Disease activity score

28-joint disease activity score using ESR, tender/swollen joint counts and patient global.

Disease activity score

Clinical Disease Activity Index. A lab-free composite for RA disease activity.

Prediction rule

Leiden Clinical Prediction Rule

Predicts risk of progression from undifferentiated arthritis to RA at 1 year.

Systemic Lupus Erythematosus / Lupus

Classification and disease activity tools for systemic lupus erythematosus.

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Classification criteria

SLICC Criteria for SLE

2012 SLICC classification: clinical and immunologic criteria for lupus.

Disease activity score

Weighted 24-item score for lupus disease activity across organ systems.

Disease activity index

BILAG-2004 / Easy-BILAG

Structured recording of lupus disease activity by organ system using the A–E scheme.

Ankylosing Spondylitis / Axial & Peripheral Spondyloarthritis

Classification, activity, function and mobility tools for axial and peripheral SpA.

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Classification criteria

ASAS Criteria for Axial Spondyloarthritis

Imaging and clinical arms for axial spondyloarthritis classification.

Classification criteria

ASAS Criteria for Peripheral Spondyloarthritis

Classification criteria for peripheral SpA when arthritis, enthesitis or dactylitis is present.

Disease activity score

Bath Ankylosing Spondylitis Disease Activity Index across 6 patient-reported items.

Functional index

Bath Ankylosing Spondylitis Functional Index. 10 activities of daily living.

Metrology index

Bath AS Metrology Index. Serial monitoring of spinal and hip mobility.

Disease activity score

ASAS-endorsed axial SpA disease activity score using CRP and patient-reported items.

Sjögren's Disease

Classification tools for primary Sjögren's syndrome.

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Classification criteria

2016 ACR/EULAR Classification Criteria for Sjögren's

Weighted criteria for primary Sjögren's syndrome with inclusion and exclusion rules.

Polymyalgia Rheumatica

Classification tools for polymyalgia rheumatica.

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Classification criteria

2012 ACR/EULAR Classification Criteria for PMR

Provisional PMR classification with and without ultrasound criteria.

Psoriatic Arthritis

Classification and screening tools for psoriatic arthritis.

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Classification criteria

CASPAR Criteria for Psoriatic Arthritis

Classification criteria for psoriatic arthritis with the CASPAR psoriasis rule.

PEST Screening Tool

Psoriasis Epidemiology Screening Tool. Short PsA screen for people with psoriasis.