Telephone samples: the exclusive mobile challenge

Readership research based on telephone samples has developed since the late eighties and they have become a serious alternative to personal interviews. Today, some small but relevant countries such as the Netherlands, Finland or Switzerland use telephone sample for audience research purposes. In France, where telephone based samples are largely accepted, and two major audience surveys use telephone sampling:
– The NRS for daily newspapers: this survey is run separately from the AEPM survey our NRS for magazines, which is run on CAPI Double Screen technology
– The 75000+ Survey, which is the official radio audience measurement in France.

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