Feature | Feature importancea | macro-AUC | Optimal threshold OA vs RAb |
---|---|---|---|
Mast cells | 0.34 | 0.80 | Present vs none |
Automated cell density | 0.25 | 0.88 | <3400c cells/mm2 |
Fibrosis | 0.11 | 0.84 | Focal and widespread vs none |
Lining hyperplasia | 0.10 | 0.78 | Normal lining or 2–3 cells thick vs >3–4 cells thick or > 4 cells thick |
Fibrin | 0.05 | 0.68 | None vs present |
Sub-lining giant cells | 0.05 | 0.57 | None vs present |
Lymphocytic inflammation | 0.04 | 0.69 | None and mild (0–1 perivascular aggregates per low power field) vs marked (both perivascular and widespread interstitial aggregates) and band-like |
Neutrophils | 0.02 | 0.60 | None vs present |
Detritus | 0.01 | 0.64 | Absent vs present (small or large particles) |
Plasma cells | 0.01 | 0.66 | <50% plasma cells |
Binucleate plasma cells | 0.01 | 0.60 | None vs present |
Synovial giant cells | 0.01 | 0.58 | None vs present |
Germinal centers | 0.01 | 0.51 | None vs present |
Mucoid change | 0.00 | 0.50 | No optimal threshold |
Russell bodies | 0.00 | 0.56 | None vs present |