E-Discovery and Litigation Data
Review
The overturn rate is the percentage of sampled or escalated documents where a second-level reviewer changes the first-pass coding. It is tracked by reviewer and by document category.
Elevated rates indicate training gaps or protocol ambiguity.
Alternative Names:
Overturn Rate, Coding Error Rate
Why it Matters?
Overturn rate is the most actionable review quality metric because it identifies both individual reviewers needing correction and protocol provisions producing confusion across the team. A rate elevated across all reviewers points at the protocol rather than the people. Tracking it by document category also reveals where the material itself is genuinely ambiguous, which may warrant escalation rules rather than more training.
Frequently Confused with
Related terms
Frequently asked questions
What does an elevated overturn rate indicate?
How is the metric used?
