🦴 RA Treatment Response (ACR20/50/70) Simulator

Baseline Tender and Swollen Joint Counts

Placeholder: baseline exam counts tender and swollen joints.

• 28: Tender joint count (Placeholder baseline count)
• 20: Swollen joint count (Placeholder baseline count)
• 28: Joints assessed (Placeholder joint assessment set)
• 7: Core set measures (Placeholder ACR core measures)

Why baseline joint counts matter

Placeholder: baseline values anchor every later percent-improvement calculation.

Placeholder: accurate baseline scoring is essential for valid ACR response.

Post-Treatment Joint Count Improvement

Placeholder: therapy lowers tender and swollen joint counts over time.

• 0-100%: Joint slider control (Placeholder improvement range)
• ≥20%: ACR20 joint bar (Placeholder required reduction)
• ≥50%: ACR50 joint bar (Placeholder required reduction)
• ≥70%: ACR70 joint bar (Placeholder required reduction)

Tracking joint resolution visually

Placeholder: resolved joints fade from active red to inactive gray.

Placeholder: joint count improvement alone does not define ACR response.

Core Set Measure Improvements

Placeholder: five additional core measures track overall disease activity.

• 0-10: Patient global (Placeholder visual analog scale)
• 0-10: Physician global (Placeholder visual analog scale)
• 0-3: HAQ-DI (Placeholder disability index)
• mg/L: CRP (Placeholder inflammation marker)

Five core measures beyond joints

Placeholder: pain, global scores, disability and CRP all count too.

Placeholder: three of five core measures must improve for ACR credit.

Percentage Improvement Calculation

Placeholder: percent change from baseline drives the ACR decision.

• (base−cur)/base: Formula (Placeholder percent-change formula)
• live: Joint % improvement (Placeholder from slider 1)
• live: Core % improvement (Placeholder from slider 2)
• AND logic: Combined check (Placeholder both must clear bar)

Combining two percentage tracks

Placeholder: joint and core percentages are compared against the same cutoff.

Placeholder: both tracks must clear a threshold together for that ACR tier.

ACR20/50/70 Response Classification

Placeholder: final classification badges light as thresholds are crossed.

• Minor: ACR20 (Placeholder minimal response tier)
• Moderate: ACR50 (Placeholder moderate response tier)
• Major: ACR70 (Placeholder major response tier)
• <20%: Non-responder (Placeholder below ACR20 bar)

Reading the final response badge

Placeholder: the highest tier reached becomes the reported response.

Placeholder: ACR70 responders show the strongest treatment benefit.