Arbitron Redefines Metro Survey Area For Diaries
PPM Criterion Of Metro Surveys Under Review
March 9, 2011 at 10:57 AM (PT)
ARBITRON, INC. has updated criterion for redefining metro survey areas in its diary markets in response to changes in the radio business environment and in consultation with representatives from its Radio and Advertiser/Agency Advisory Councils. The new criterion is expected to take effect in time for redefinitions to be applicable for the FALL 2011 survey period.
The new criterion for determining if a county qualifies to be in the Metro is based on a 70-point criterion, which replaces the 55% listening/15% commuting criteria that had been in place since 1998.
Under the new 70-point criterion, a county would qualify for inclusion in a Metro when the sum of the percentage of listening and the percentage of commuting is 70% or more, provided that a minimum of 55% of the listening quarter-hours in the county are credited to stations that are home to the existing metro. Counties with less than 55% listening to metro stations, regardless of commuting percentage, are not eligible for the metro.
Under the former criteria, at least 55% of the listening quarter-hours in the county had to be credited to stations that are home to the existing Metro and at least 15% of the commuting in the county must have been into the existing Metro. The new rule has no minimum for commuting.
"The radio broadcasting landscape has changed significantly over the past 13 years and we felt it was in the best interest of our clients to evaluate the existing metro redefinition policies," EVP/U.S. Media Services SEAN CREAMER said. "We greatly appreciate the time and careful consideration our advisory council members put into developing their recommendations for the updated metro redefinition policies."
ARBITRON is now in the process of reviewing its Metro redefinition policy for markets using the PORTABLE PEOPLE METER ratings service.