NADbank data are collected via two methods:

Telephone Interview

Newspaper readership, other media usage and demographic information is gathered during a telephone interview with adults 18 and over. The interview is approximately 17 minutes in length, not including screening question.

Mail-Back Questionnaire

Respondents from the telephone interview were sent an incentive to complete a mail-back questionnaire. A mail questionnaire allows NADbank to obtain more information than would be feasible in a telephone interview.

For more detailed information on study methodology refer to the NADbank Technical Report.