As the battle heats up for the radio ratings business, both contenders are rolling out data to show that their diary sample is best. Arbitron says it met or exceeded several key quality metrics for ...

The Council for Research Excellence (CRE) will conduct a three-market study encompassing various audience-measurement methods to better understand response bias in address-based audience samples. The ...

Simple template diary for patients to record their sleep patterns. The patient should usually keep the sleep diary for two to three weeks. Items one to three on the sample diary record total sleep ...