volume 20, issue 24, P3831-3846 2001
DOI: 10.1002/sim.1148
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Abstract: Complex health-related concepts are commonly measured by means of multi-item scales or questionnaires. As the item scales of an instrument cover different aspects of the same variable, a single global response value is required of the concept to be measured. In this paper, different approaches that take into account the non-metric properties of ordered categorical data when aggregating multi-item scales into global scaling were suggested. A single score of equally important items is easily defined by the media…

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