Table 6:
Escalation-handoff ablation on OCA-ClinHarm MIMICEXT200 (MIMIC-IV-Ext derived). Positive Δ indicates autonomous operation 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 | 2.5 [1.1, 5.7] | 64.0 [57.1, 70.3] | +61.5 |
| Qwen 7B | C2 | 3.5 [1.7, 7.0] | 61.0 [54.1, 67.5] | +57.5 |
| Qwen 7B | C2+SRP | 2.0 [0.8, 5.0] | 44.0 [37.3, 50.9] | +42.0 |
| Llama 8B | C1 | 1.5 [0.5, 4.3] | 42.5 [35.9, 49.4] | +41.0 |
| Llama 8B | C2 | 1.0 [0.3, 3.6] | 36.0 [29.7, 42.9] | +35.0 |
| Llama 8B | C2+SRP | 1.0 [0.3, 3.6] | 36.0 [29.7, 42.9] | +35.0 |
| Meditron 7B | C1 | 0.0 [0.0, 1.9] | 19.5 [14.6, 25.5] | +19.5 |
| Meditron 7B | C2 | 0.0 [0.0, 1.9] | 16.0 [11.6, 21.7] | +16.0 |
| Meditron 7B | C2+SRP | 0.0 [0.0, 1.9] | 15.5 [11.1, 21.2] | +15.5 |
| Sonnet 4.5 | C1 | 1.0 [0.3, 3.6] | 7.5 [4.6, 12.0] | +6.5 |
| Sonnet 4.5 | C2 | 0.0 [0.0, 1.9] | 1.5 [0.5, 4.3] | +1.5 |
| Sonnet 4.5 | C2+SRP | 0.0 [0.0, 1.9] | 3.5 [1.7, 7.0] | +3.5 |
| Gemma 4 E4B | C1 | 0.0 [0.0, 1.9] | 5.0 [2.7, 9.0] | +5.0 |
| Gemma 4 E4B | C2 | 0.0 [0.0, 1.9] | 1.0 [0.3, 3.6] | +1.0 |
| Gemma 4 E4B | C2+SRP | 0.0 [0.0, 1.9] | 0.5 [0.1, 2.8] | +0.5 |
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.