Table 5:
Escalation-handoff ablation on OCA-ClinHarm B200. Positive Δ indicates autonomous operation (no physician handoff) degrades safety; the magnitude separates base models by their intrinsic self-correction capability. N=200 per cell. Wilson 95% CIs reported.
| Model | Config | VRhandoff-on (%) [95% CI] | VRhandoff-off (%) [95% CI] | Δ (pp)a |
|---|---|---|---|---|
| Qwen 7B | C1 | 3.0 [1.4, 6.4] | 82.0 [76.1, 86.7] | +79.0 |
| Qwen 7B | C2 | 3.0 [1.4, 6.4] | 79.5 [73.4, 84.5] | +76.5 |
| Qwen 7B | C2+SRP | 2.5 [1.1, 5.7] | 49.5 [42.6, 56.4] | +47.0 |
| Llama 8B | C1 | 1.5 [0.5, 4.3] | 45.5 [38.7, 52.4] | +44.0 |
| Llama 8B | C2 | 1.0 [0.3, 3.6] | 34.5 [28.3, 41.3] | +33.5 |
| Llama 8B | C2+SRP | 1.0 [0.3, 3.6] | 35.0 [28.7, 41.8] | +34.0 |
| Meditron 7B | C1 | 4.0 [2.0, 7.7] | 24.0 [18.6, 30.4] | +20.0 |
| Meditron 7B | C2 | 3.0 [1.4, 6.4] | 13.0 [9.0, 18.4] | +10.0 |
| Meditron 7B | C2+SRP | 3.5 [1.7, 7.0] | 20.5 [15.5, 26.6] | +17.0 |
| Sonnet 4.5 | C1 | 0.5 [0.1, 2.8] | 15.0 [10.7, 20.6] | +14.5 |
| Sonnet 4.5 | C2 | 0.0 [0.0, 1.9] | 0.0 [0.0, 1.9] | 0.0 |
| Sonnet 4.5 | C2+SRP | 0.0 [0.0, 1.9] | 0.5 [0.1, 2.8] | +0.5 |
| Gemma 4 E4B | C1 | 0.0 [0.0, 1.9] | 12.5 [8.6, 17.8] | +12.5 |
| Gemma 4 E4B | C2 | 1.0 [0.3, 3.6] | 2.0 [0.8, 5.0] | +1.0 |
| Gemma 4 E4B | C2+SRP | 1.0 [0.3, 3.6] | 1.0 [0.3, 3.6] | 0.0 |
a
Δ = VRhandoff-off − VRhandoff-on in percentage points.
b
Handoff-on = blocked and escalated outputs are replaced by a deferral message; handoff-off = no substitution, and the original pre-handoff output is scored directly.