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Direct linkBladon, Teresa L. – Canadian Journal of Program Evaluation, 2009
Rapidly declining response rates and the associated threat of nonresponse bias call into question the validity of data obtained through telephone surveys, a tool often used in evaluation. This article explores changes in nonresponse bias over time by examining three data points (1991, 1996, and 2002) from an annual household telephone survey…
Descriptors: Telephone Surveys, Foreign Countries, Response Rates (Questionnaires), Trend Analysis
