Primitive 10 / Stop rules

Early stopping card

Defines and exposes the early-stopping ladder. Each rule has a label, a threshold, a state (off / armed / triggered) and a detail line that explains the current evidence.

Production answer

Early stopping card is a reusable Oak Flats Muffler Men UI primitive with documented states, accessibility expectations, theme behavior, and implementation evidence.

Primary CTAReview Early stopping card states
Generative search brief

Early stopping card: Defines and exposes the early-stopping ladder. Each rule has a label, a threshold, a state (off / armed / triggered) and a detail line that explains the current evidence.

Live primitive · Quote PDF redesign
Stop rules · Futility & Superiority

Stopping rules

Superiority · Posterior P(treatment beats control) ≥ 0.97Currently 0.94 · 6 days to projected fire
Armed
Futility · Posterior P(lift < +1%) ≥ 0.90Posterior 0.04 — no futility signal
Off
Guardrail · Quote PDF download rate drop > 5 ppPDF downloads fell 6.2 pp — guardrail tripped
Triggered
Max duration · Max 28 daysDay 14 of 28
Off