Survey mode effects linked to unit nonresponse and screening procedures were estimated in a study of self-reported tobacco, alcohol, and illicit drug use. Two samples of the same population were drawn ...
Recent years have seen an increasing interest in probability sampling, and some proponents of the method have urged its use in public opinion surveys. This article reports on a comparative study of ...
Results for the survey are based on face-to-face interviews conducted under the direction of Opinion Research Business in Iraq, Morocco and Tunisia and Princeton Survey Research Associates ...
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