Sample Solutions has developed a
RDD
FRAMEWORK
that is fully representative

Introduction to RDD

Random Digit Dialing, commonly known as RDD, is a cost effective method for generating a representative sample of households with fixed telephones.
Often when telephonic consumer fieldwork is conducted, fieldwork agencies make use of RDD sample.  The main advantage of RDD is that it includes unlisted numbers as well.

Sample Solutions has developed a highly accurate RDD procedure that maintains the representative proportion of the corresponding populations.

This paper also shows how the RDD sample approach is set up and how it can be improved using proper filtering techniques.
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Improving CATI Fieldwork Whitepaper

Carsten Broich

Managing Director