The PSweights are a combination of the design weights and the individual level weight. PSweights are recommended when comparing means, proportions, etc. across regions and/or countries to correct for sampling issues, in particular when comparing regions within countries with a select region which is over-sampled. However, for more sophisticated, multilevel statistical analyses, the researcher can/should include additional demographic controls as independent variables in the model, such as income or age for example.
Type of variable: Continuous