Doctor guides and calculators
Referral guides and interactive tools I use in clinic, grouped by disease so you can go straight to the calculator you need. These support, and do not replace, your own clinical judgement.
Rheumatoid Arthritis
Score joint involvement, serology, acute-phase reactants and duration to classify RA.
28-joint disease activity score using CRP, tender/swollen joint counts and patient global.
28-joint disease activity score using ESR, tender/swollen joint counts and patient global.
Clinical Disease Activity Index. A lab-free composite for RA disease activity.
20-question Health Assessment Questionnaire scoring difficulty with everyday activities from 0 to 3.
Predicts risk of progression from undifferentiated arthritis to RA at 1 year.
9 September 2026, Wednesday · 7:00pm to 9:00pm · Lola by Serai (KLGCC)
26 August 2026, Wednesday · 3:00pm to 4:00pm · Seminar Room 4F, Prince Court Medical Centre
Systemic Lupus Erythematosus
Ankylosing Spondylitis / Spondyloarthritis
GP screening tool for chronic back pain that drafts a referral letter when 4 of 5 features are present.
Imaging and clinical arms for axial spondyloarthritis classification.
Classification criteria for peripheral SpA when arthritis, enthesitis or dactylitis is present.
Bath Ankylosing Spondylitis Disease Activity Index across 6 patient-reported items.
Bath Ankylosing Spondylitis Functional Index. 10 activities of daily living.
Bath AS Metrology Index. Serial monitoring of spinal and hip mobility.
ASAS-endorsed axial SpA disease activity score using CRP and patient-reported items.
Work Productivity and Activity Impairment: absenteeism, presenteeism and activity impairment over 7 days.
Psoriatic Arthritis
Sjögren's Disease
Polymyalgia Rheumatica
Gout
CPPD Disease / Pseudogout
Complex Regional Pain Syndrome (CRPS)
Osteoporosis
Inflammatory Arthritis (general)
General Tools
Interactive rheumatology classification criteria and disease activity scores for clinicians.
Convert commonly used systemic corticosteroid doses using approximate anti-inflammatory equivalence.
Calculate patient-specific adult IVIG infusion pump rates for supported IVIG products and generate a printable monitoring checklist.
