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Samples in periodicals archive:
Referring to Siena, Skelos said, "They used the random digit dialing.
We acknowledge that a "bank" of these readily accessible controls could permit more rapid recruitment of participants in numerous age strata and obviate the need for extensive random digit dialing to recruit an adequate age-matched control population in many investigations.
Methodology GfK Roper Public Affairs & Media conducted these studies using Random Digit Dialing (RDD) methodology.
A Computer Assisted Telephone Interviewing (CATI) facility and Random Digit Dialing (RDD) technology were used.
Methodology Roper Public Affairs conducted this study using Random Digit Dialing (RDD) methodology from September 22 through September 24, 2006.
The CATI system uses a random digit dialing (RDD) sampling method that insures a true random selection among all telephone numbers and provides a truly independent sample for each wave.
Using a random digit dialing methodology, Greenwald & Associates polled 1,603 people born between 1946 and 1978, with household incomes of $35,000 or more.
Results are based on OmniTel(TM) telephone interviews conducted from May 19 - 21, 2006 among a nationally representative sample of 1,004 US adults using a random digit dialing (RDD) probability sample of all telephone households in the continental United States.