Assessing the Dimensionality of Lifetime DSM-IV Alcohol Use Disorders and a Quantity-Frequency Alcohol Use Criterion in the Australian Population: a Factor Mixture Modelling Approach

Incorporating both dimensional and categorical conceptions of lifetime AUD did not provide substantial gains over a simple structure unidimensional model of AUD severity. The utility of a QF use criterion in helping to diagnose AUD is questionable. These findings should be of relevance to the DSM-5 substance use disorder workgroup.