Measurement invariance of DSM-IV alcohol, marijuana and cocaine dependence between community-sampled and clinically overselected studies.

ABSTRACT:

Aims

To examine whether DSM-IV symptoms of substance dependence are psychometrically equivalent between existing community-sampled and clinically overselected studies.

Participants

A total of 2476 adult twins born in Minnesota and 4121 unrelated adult participants from a case-control study of alcohol dependence.

Measurements

Life-time DSM-IV alcohol, marijuana and cocaine dependence symptoms and ever use of each substance.

Design

We fitted a hierarchical model to the data, in which ever use and dependence symptoms for each substance were indicators of alcohol, marijuana or cocaine dependence which were, in turn, indicators of a multi-substance dependence factor. We then tested the model for measurement invariance across participant groups, defined by study sour

SUBMITTER: Derringer J 

PROVIDER: S-EPMC3742679 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature