Phase 1 indicator set.

Advertised Rate Index

Monthly medians for standard advertised durations, centered on the 1-hour incall benchmark.

Outcall Premium

Advertised differential between matched outcall and incall pricing.

Market Volume Index

Distinct monthly listings and advertiser counts after warehouse deduplication.

Listing Persistence Index

Observed carry-over, turnover, and exit patterns between monthly snapshots.

Advertiser Continuity Index

Previous-month overlap of hashed advertiser identities, separated from simple listing-ID persistence.

Mobility / Multi-Location Index

Advertiser activity spanning more than one region in a single month.

Concentration Index

How concentrated listing activity is among repeat advertisers.

Intimacy-Service Index

Share of listings advertising at least one companionate service marker.