🦴 SDAI (Simplified Disease Activity Index, RA)
UseWhen to use: treat-to-target visits when CRP is available.
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Strata≤3.3 remission; ≤11 LDA; ≤26 MDA; >26 HDA.
LimitsWhen not to use: CRP units mistaken (mg/L vs mg/dL). · Pitfall: ignoring extra-articular disease. · CDAI is the CRP-free sibling.
SourceSmolen JS / Aletaha D SDAI literature
Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Scene next step
📋rheumOpen scene pack →Matching pathway
🧭septic_arthritisOpen pathway →Score + version; reference only — not a substitute for care · no HIS write
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Methodology · worked example, guidelines & full notes
Clinical takeaway
CRP in mg/dL.
When to use
When to use: treat-to-target visits when CRP is available.
How it works
TJC28 + SJC28 + PtGA(0–10) + PhGA(0–10) + CRP(mg/dL).
Key points
- CRP in mg/dL.
- ≤3.3 remission.
- Next: CDAI / DAS28.
References
- Smolen JS / Aletaha D SDAI literature
Verification & sources · governance
FAQ
Frequently asked questions
- Does SDAI (Simplified Disease Activity Index, RA) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.