Modeling Nicotine Dependence: An Application of a Longitudinal IRT Model for the Analysis of Adolescent Nicotine Dependence Syndrome Scale

Nicotine & Tobacco Research,

Infrequently endorsed Nicotine Dependence Syndrome Scale items were generally better able to distinguish higher levels of dependency. The endorsement of such items increased over time. Items that changed significantly over time reflected the general drive concept of dependence, as well as the total first overarching dimension of dependence.

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