Nielsen informed clients that quality standard were not followed. Nielsen says it removed 35-households from the first two weeks of August.
According to Nielsen, "Out of an abundance of caution, we removed 35 installed households which collectively represented 55 average daily in-tab persons for the first two weeks of August. This accounts for 2% of the average daily in-tab in the LA metro area. Combined, the affected meters contributed less than 1% of the quarter hours of listening for these weeks."
According to Nielsen, Week 3 and Week 4 of August's data releases will exclude these homes, but the release of data from those weeks will not be affected.
"We are conducting an impact analysis of 2016 data in Los Angeles to determine what, if any, actions may be required for prior months. We will be in constant communication with our Los Angeles clients to ensure they are kept updated on the results of the impact analysis and plans moving forward.
"We are also investigating all other PPM markets and conducting an aggressive review of protocols and will be taking a number of steps to prevent recurrence. Nielsen is committed to upholding the highest standards of data integrity and market transparency in order to provide the most effective audience measurement solutions to meet client needs."
Nielson did not disclose what stations may be affected by the irregular compliance patterns.
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