Arbitron says it will release the April 2009 monthly PPM report for New York today, a week late, as announced last week. However, the ratings company has found more problems with its PPM data for NYC, ...

The Nielsen recall of the April Los Angeles Portable People Meter (PPM) ratings provides an opportunity to talk about what radio researchers and consultants know to be the shortcomings of the PPM ...

While a physician practice management (PPM) structure allows for compliance with corporate practice of medicine laws and ease of administration, it often creates inadvertent health plan issues that ...