Multi-level covariance structure analysis of intra-familial substance use.

@article{Duncan1997MultilevelCS,
  title={Multi-level covariance structure analysis of intra-familial substance use.},
  author={Terry E. Duncan and Susan C. Duncan and Hyman Hops and Abby Elizabeth Alpert},
  journal={Drug and alcohol dependence},
  year={1997},
  volume={46 3},
  pages={167-80}
}
Conventional covariance structure analysis, such as factor analysis, is often applied to data that are obtained in a hierarchical fashion, such as parents and siblings observed within families. However, multivariate modeling of such data are most frequently done as if the data were obtained as a simple random sample from a single population. An alternative specification is presented which explicitly models the within-level and between-level covariance matrices in familial substance use. Results… CONTINUE READING