• The permanent impairment an eligible wound leaves, scaled by how long it took to heal (Injury rules — Permanent Impairment): < 20 days → none, then −5 per completed 20-day band (20–39 → −5, 40–59 → −10, … 80–99 → −20), floored at −25 for 100+ days. Only wounds flagged sohl.document.item.logic.TraumaData.permanentImpairmentEligible (set by the Treatment Test, #553) accrue it.

    Parameters

    • daysToHeal: number

      Days from wounding to the injury reaching level 0.

    Returns number

    The permanent impairment as a non-positive number (0 when none).