Confidence distribution
Breakdown of 788 group entries by confidence rating, plus the mean CLCI per confidence tier.
High confidence
378
48.0% of entries
Mean CLCI in tier: 19.8
Medium confidence
304
38.6% of entries
Mean CLCI in tier: 19.7
Low confidence
106
13.5% of entries
Mean CLCI in tier: 18.5
What confidence ratings mean
The full criteria for each tier are documented at /methodology/confidence-levels. Briefly:
- High — multiple primary sources plus corroborating secondary work. A single new source is unlikely to materially change the rating.
- Medium — credible secondary work documents the operational pattern; the primary-source record is incomplete or partially contested.
- Low — fragmentary anecdotal reports, single-source claims, or active controversy. Provisional ratings; substantial new sources can move them in either direction.
See source density for the per-entry source-count distribution, and /confidence/low for the list of low-confidence entries currently flagged.