Cancelled_Date before then), so its line starts there; pre-2026 zeros are a tracking gap, not a real zero. In the comparable 2026 window East runs ~2× West — matching Miles's "double the West."This is heterogeneous on purpose — not every practice wins. The headline is the majority that beat their control and the median lift, not an average (averages get dominated by the few huge practices).
East shows a genuine positive lift once anchored correctly. West has too few practices (and most rolled out only weeks ago) to read yet.
As more practices accumulate mature post-rollout months, this sharpens — worth re-running monthly.
Cancelled_Date tracking gap (all-cancel was a normal ~4%), not an operational miracle. Anyone quoting 5–6× is citing missing data; use the 2026 comparable window.