Skip to Content
Delmare Digital

Reading results

What each part of the results page shows, from the verdict and group table to data quality and the chart.

The results page leads with the verdict and three key numbers, then shows each goal as a table, data quality checks, and a chart under Details. People with access.readResults can read it; by default that is anyone with access.manage.

Results are computed by your scheduled results route, so the first results appear after its first run following Start. Recompute asks for fresh results for one test straight away.

Rounds

Each start of a test is a round, and results are per round. Select a round at the top. A decided test opens on the round it was decided from, and shows the numbers recorded at the decision everywhere on the page. A rollout round (after deciding a test with a holdout) shows "Since shipping" results for the winner against the holdout.

The verdict

The verdict is one sentence and, when there is one, a recommended action, such as "Variant A is statistically better: +12% (CI +4% to +20%)." A guardrail line follows when the test has guardrails, for example "No harm detected so far" or "Too little data to rule out harm." All verdicts are listed in Verdicts.

Goal tables

Each goal has a table with one row per group:

ColumnMeaning
PeoplePeople exposed to this group in this round
ConversionsPeople with at least one outcome
Rate or AverageConversion rate for yes/no goals; average per person for counts and revenue
LiftRelative change against the Original
Confidence intervalThe range the true lift is likely in. With more than one variant, the main goal's interval is adjusted for the number of comparisons
p-valueSequential method only
Chance to win, RiskBayesian method only

The main goal decides the verdict. Supporting goals are labelled "Supporting (not used for the decision)". Guardrails show OK, Watch, Too little data or Failing. The holdout is shown as "Measured, not compared" during the test.

Revenue goals show the uncapped total alongside the capped decision statistic. If fewer than 20 people had the outcome in the 90 days before Start, no cap is applied and the page says so.

Data quality

Data quality lists anything that makes the results less trustworthy:

CheckShown when
Traffic splitThe people counted per group do not match the configured split (sample-ratio mismatch)
More than one groupPeople who saw more than one group were excluded
Mismatched beaconsBrowser exposures that did not match the assigned group were ignored
Identity conflictsSome linked identities were seen in different groups
Too few peopleThe compared groups have not reached the minimum yet
Layer roomThe layer has fewer slices reserved than the requested allocation
Page and goal checksA version page stopped resolving, a placement could not be read, or a click goal is missing from some versions

A traffic-split problem, or excluded people reaching 1%, turns the verdict into "Data problem". See Data quality.

The chart

Under Details, the chart shows the lift and confidence interval over time for each variant. Content-change markers show when an editor published a change to tested content, so you can see whether results moved afterwards.

Results for a goal that could not be read

If a goal's data source fails or times out, that goal is shown as unavailable for this run with a reason, and the next results run tries again. If the main goal is unavailable, the verdict is "Results unavailable".

The Tests home

The Tests home groups tests by what needs doing (needs attention, running, ready to start, draft, decided, archived), with a one-line status and health label for each. Draft tests name their next setup step.

Edit this page on GitHub

On this page