Chunk #5 — Analyses — Factor Analyses

Source

Toward DSM-V: an item response theory analysis of the diagnostic process for DSM-IV alcohol abuse and dependence in adolescents.

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We tested for unidimensionality by conducting an exploratory factor analysis (EFA) of the alcohol symptoms using Mplus software 29. In EFA, large ratios of first to second eigenvalues and a better fit of single versus multiple factor models are considered adequate evidence for unidimensionality 17, 30.