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The rules require that certain background questions are defined in the CATI survey that uses them, as shown below:
Figure 1 - Defining Background Questions
If more than six telephone numbers are required, simply add extra Tel, StatusTel and CountTel background questions. So, for example, if eight telephone numbers are required, Tel7, Tel8, StatusTel7, StatusTel8, CountTel7 and CountTel8 must be added.
The StatusTelN single questions are used to keep track of whether a phone number has been tried, it is a valid number (i.e. connected when dialed) or failed to connect. They are defined with the following answer and code options:
Figure 2 - The Answer and Code Options
The StopRotation single question with codes 0 and 1 is used to flag the respondent when an appointment is made or when a new phone number is provided. It is assumed the phone number used when the appointment is made is the correct number to continue calling and no rotation is required anymore for those respondents with more than one usable phone number. The same assumption is made when a new telephone number is supplied when calling the respondent.