Australia's three other largest publishers are following News with a decision to no longer publicly report their circulations.

Australian Community Media, Seven's West Australian Newspapers and Nine remain members and audited by the Audited Media Association of Australia, "as it supports the audience metric" but chief executive Josanne Ryan says they are no longer publicly reporting circulation.

"They report emma audience data as this is what the agencies are referencing for print as it also incorporates a combined print and digital audience," she says.

In a statement, AMAA - which embraces the ABC and CAB metrics - said it was ensuring it moved alongside the changes to support its industry partners.

"Having provided robust, independent third-party measurement to hundreds of publishers in need of print title audits since 1932," the group says the three publishers are moving to private auditing by the AMAA.

"This move acknowledges the changing marketplace for publishers as they focus on multi-platform audience measurement."

Ryan says the AMAA c urrently provides audit services for 700 media brands across ABC and CAB print, digital and events either as a publicly reported metric or as non-reported audited data. It also provides the required audited data to IPSOS for the Emma print readership within cross-platform audience metrics.

"The AMAA is evolving its services to support the changing media reporting landscape where audience metrics are the primary metric. The AMAA continues to advance how it works with publishers, large and small, to support them with audited metrics that work for their business and we will continue to work closely with our industry partners."

News Corp already has titles privately audited by AMAA, having opted out of public facing data two y ears ago.

The AMAA is also focused on a new data privacy risk service for members, and a project decoding best practice for the influencer marketplace. "Stay tuned as there's much more to come," she says.