01 / Boundary
Boundary sensitivity
Would shifting the start or end date change the trend?
The quarterly window is the declared purpose of the release and revisions are disclosed. No alternative window is shown alongside the headline, so a reader cannot see how the trend changes over a year.
- Baseline used
- Previous quarter, chained-volume measure
- Defensible alternative
- Year-on-year and pre-pandemic comparisons are available in the data tables but absent from the headline narrative