The usefulness of the Basic Question - procedure for determining nonresponse bias in substantive variables: a test of four telephone questionnaires

The Basic Question Procedure (BQP) is a method for determining non-response bias. The BQP involves asking one basic question – that is, the question relating to the central substantive variable of the study – of those persons who refuse to participate in the survey.
  

The usefulness of the Basic Question Procedure for determining non-response bias in substantive variables – a test of four telephone questionnaires

Henk van Goor and Annemiek van GoorUniversity of Groningen

Non-response bias endangers the representativeness and validity of survey research. However, the extent of non-response bias in our data is seldom known because of a lack of information on non-respondents. Even if information on non-respondents is available – for instance, from the sampling frame – this information is usually restricted to demographic variables, such as gender, age and place of residence. We know considerably...

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