Use of SMS texts for facilitating access to online alcohol interventions: a feasibility study

A41 Use of SMS texts for facilitating access to online alcohol interventions: a feasibility study In: Addiction Science & Clinical Practice 2017, 12(Suppl 1): A4

The cusp catastrophe model as cross-sectional and longitudinal mixture structural equation models

Catastrophe theory (Thom, 1972, 1993) is the study of the many ways in which continuous changes in a system's parameters can result in discontinuous changes in 1 or several outcome variables of interest. Catastrophe theory—inspired models have been used to represent a variety of change phenomena in the realm of social and behavioral sciences. Despite their promise, widespread applications of catastrophe models have been impeded, in part, by difficulties in performing model fitting and model comparison procedures. We propose a new modeling framework for testing 1 kind of catastrophe model—the cusp catastrophe model—as a mixture structural equation model (MSEM) when cross-sectional data are available; or alternatively, as an MSEM with regime-switching (MSEM-RS) when longitudinal panel data are available. The proposed models and the advantages offered by this alternative modeling framework are illustrated using 2 empirical examples and a simulation study

Nonmedical Prescription Drug Use and Delinquency: An Analysis with a National Sample

There is an abundance of research on the association between substance use and delinquency. However, an area yet to be examined is the association between nonmedical prescription drug use and delinquency. This is important given the substantial increase in nonmedical prescription drug use in recent years and the fact that recent national surveys of substance use show that the prevalence of nonmedical prescription drug use is now greater than that of illicit drugs other than marijuana. Using data from a national sample, this research examines the association between nonmedical prescription drug use and delinquency among adolescents. Findings indicate that nonmedical prescription drug use is significantly associated with self-reported delinquency and arrest. However, the use of other illicit drugs is more strongly associated with self-reported delinquency and arrest than nonmedical prescription drug use. © 2008 by the Journal of Drug Issues