A series break occurs when a change in the methodology used to measure and report audience data produces a significant change to the audience data itself. This is typically as a result of improvements in measurement techniques that allow more accurate and comprehensive collection and computation of the data.
Audience reports up to September 2018 use Nielsen Digital Panel (NDP) audience figures. From October 2018, TRW began the integration of Nielsen’s improved, IAB accredited Digital Content Ratings (DCR) data which permits the capture of digital audiences previously unreported (off-platform, secure pages, video and mobile under 18 years old).
As the digital methodology has changed, there will be a trend break in the data, rendering year-on-year comparisons of both digital audiences and total audiences for news media and magazines invalid. The trend break will last until October 2019. Month-on-month comparisons may be made from the November 2018 database onwards. Print remains unaffected.
|Data Period||Public Release Date|
|Feb 18 – Jan 19||1 April, 2019|
|Mar 18 – Feb 19||29 April, 2019|
|Apr 18 – Mar 19||3 June, 2019|
|May 18 – Apr 19||1 July, 2019|
|Jun 18 – May 19||29 July, 2019|
|Jul 18 – Jun 19||26 August, 2019|
|Aug 18 – Jul 19||30 September, 2019|
|Sep 18 – Aug 19||28 October, 2019|
|Oct 18 – Sep 19||25 November, 2019|
|Nov 18 – Oct 19||13 January, 2020|
|Dec 18 – Nov 19||10 February, 2020|
|Jan 19 – Dec 19||2 March, 2020|
Newspaper + magazine titles
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