Nielsen Not Reissuing Los Angeles PPM Radio Data For Past Year Following Impact Analysis

Not Reissuing Data For Past Year

When NIELSEN first disclosed the recent problems with the LOS ANGELES PPM data (NET NEWS 6/11) and announced a reissue of the APRIL data due to the presence of a media-affiliated household on the panel, it soon announced that it would conduct an impact analysis (NET NEWS 6/17).

That impact analysis has been completed, the results shared with NIELEN AUDIO PPM clients in LOS ANGELES, and the findings were apparently so insignificant that NIELSEN AUDIO has decided not to reissue the LOS ANGELES PPM ratings for the past year.

In a prepared statement, NIELSEN said, "Subsequent to last month's delay and reissue of LOS ANGELES PPM RADIO data, NIELSEN has conducted an impact analysis extending back over the past year to examine the impact of the media-affiliated household that was recently removed from the panel. After comparing the audience estimates without this home in the panel to those we originally published which included the household, we have decided not to reissue currency LOS ANGELES data for any prior report periods.

"Our analysis revealed that any significant differences in the estimates over the past year were isolated primarily to a single station (the station associated with the media-affiliated household) and that there were minimal differences in the estimates for the overwhelming majority of other stations in the market. We have concluded that a reissue of prior currency data would be of limited commercial benefit to customers and would result in further disruption to the marketplace.

"NIELSEN is committed to upholding the highest standards of data integrity and acts swiftly to meet those standards. We have taken a number of actions to minimize the risk of reoccurrence and to strengthen our measures to ensure that panelists are complying properly in all markets. NIELSEN will also be launching an education and awareness campaign with the broadcast industry to remind them of our panel security and media affiliation guidelines."

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