Journal of Official Statistics, Vol.4, No.4, 1988. pp. 285–297
Accessibility by Telephone in Australia: Implications for Telephone Surveys
David Steel and Peter Boal
Abstract:Telephone sampling methods such as random digit dialling (RDD) leave the population who do not own a telephone unrepresented. In this paper, data from the March 1986 Monthly Labour Force Survey and the 1984 Household Expenditure Survey are analysed to examine the characteristics of the population not accessible by telephone and the reasons for not having a telephone. The associated coverage biases are also analysed. Automatic interaction detection (AID) is used to help isolate those variables which are important in affecting accessibility by telephone and the subgroups of the population with relatively low telephone coverage. The effectiveness of post-stratification in reducing the coverage bias is also investigated.
Keywords:Telephone surveys; telephone penetration; coverage bias; automatic interaction detection; post-stratification.
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