Evaluating the Psychometric Properties of the Severson 7-Item Smokeless Tobacco Dependence Scale (SSTDS).

ST dependence has multiple aspects that can be best studied by multidimensional dependence scales. The study findings validate that the SSTDS measures not only the physical dependence but also the behavioral and psychological dimensions of dependence. Good psychometric properties, diagnostic accuracy, and multidimensional structure of SSTDS indicate that it may serve as an effective tool in assessing ST dependence in clinical and research settings.