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concentration · concentration_index
EGM concentration index (HHI on EGM count)
CONFIDENTDERIVED · v1Reproducible calculation derived from directly observed source data. Values are descriptive only.
Calculation audit
- Evidence class
- derived
- Grain
- LGA, STATE
- Computability
- computable
Assumptions
- HHI scale: 0–10,000. Concentration interpretation is methodology-declared; thresholds: <1500 unconcentrated, 1500–2500 moderate, >2500 concentrated.
Limitations
- Index is over authorised-EGM count, NOT dollars. Dollar-share HHI is uncomputable under current basis.
Version history
- v1 · registered · Initial methodology registration. · 2026-05-18T08:57:16.252Z
Derived values (top 50 of 249)
| Entity | Stream | Period | Value | Confidence |
|---|---|---|---|---|
| LGA Brewarrina | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Uralla | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Gwydir | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA North Sydney | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Cabonne | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Glen Innes Severn | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Cobar | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Murrumbidgee | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Hunters Hill | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Liverpool Plains | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Bourke | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Walgett | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Lane Cove | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Narromine | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Berrigan | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Bogan | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Walcha | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Gilgandra | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Blayney | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Narrandera | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Oberon | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Mosman | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Kyogle | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Junee | HOTEL | 2025-12-01 | 5,000 | LIMITED |
| LGA Hunters Hill | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Walcha | CLUB | 2025-11-01 | 5,000 | LIMITED |
| LGA Wentworth | CLUB | 2025-11-01 | 4579.761 | CONFIDENT |
| LGA Forbes | CLUB | 2025-11-01 | 4192.437 | CONFIDENT |
| LGA Central Darling | CLUB | 2025-11-01 | 4173.554 | CONFIDENT |
| LGA Willoughby | CLUB | 2025-11-01 | 4163.764 | CONFIDENT |
| LGA Junee | CLUB | 2025-11-01 | 3775.510 | CONFIDENT |
| LGA Strathfield | CLUB | 2025-11-01 | 3755.773 | CONFIDENT |
| LGA Upper Lachlan | CLUB | 2025-11-01 | 3439.126 | CONFIDENT |
| LGA Tenterfield | HOTEL | 2025-12-01 | 3400.000 | CONFIDENT |
| LGA Yass Valley | CLUB | 2025-11-01 | 3353.894 | CONFIDENT |
| LGA Gilgandra | CLUB | 2025-11-01 | 3350.694 | CONFIDENT |
| LGA Balranald | CLUB | 2025-11-01 | 3341.716 | CONFIDENT |
| LGA Weddin | HOTEL | 2025-12-01 | 3271.605 | CONFIDENT |
| LGA Edward River | CLUB | 2025-11-01 | 3224.487 | CONFIDENT |
| LGA Glen Innes Severn | CLUB | 2025-11-01 | 3154.688 | CONFIDENT |
| LGA Broken Hill | HOTEL | 2025-12-01 | 3,125 | CONFIDENT |
| LGA Wentworth | HOTEL | 2025-12-01 | 3067.061 | CONFIDENT |
| LGA Warren | CLUB | 2025-11-01 | 3036.883 | CONFIDENT |
| LGA Oberon | CLUB | 2025-11-01 | 3,036 | CONFIDENT |
| LGA Hay | HOTEL | 2025-12-01 | 3016.529 | CONFIDENT |
| LGA Temora | CLUB | 2025-11-01 | 2995.266 | CONFIDENT |
| LGA Warrumbungle | HOTEL | 2025-12-01 | 2901.701 | CONFIDENT |
| LGA Mosman | HOTEL | 2025-12-01 | 2869.822 | CONFIDENT |
| LGA Greater Hume | HOTEL | 2025-12-01 | 2851.563 | CONFIDENT |
| LGA Carrathool | CLUB | 2025-11-01 | 2839.335 | CONFIDENT |
Institutional metadata
- Evidence class
- derived metric
- Institutional use
- public_observability
Known limitations
- Index is over authorised-EGM count, NOT dollars. Dollar-share HHI is uncomputable under current basis.
Decision-support indicator only. Not a regulatory determination.