Chunk #23 — Materials and Methods — Statistical Analyses — Descriptive and comparative statistics.

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Density and Dichotomous Family History Measures of Alcohol Use Disorder as Predictors of Behavioral and Neural Phenotypes: A Comparative Study Across Gender and Race/Ethnicity.

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Descriptive statistics were computed for all FH measures. Specifically, for density measures, independent t-tests were used to compare the mean density scores within gender and race/ethnic groups (defined by participant’s self-report). Similarly, for dichotomous measures, parametric Pearson’s Chi square tests to compare the proportions of FH+ within gender and race/ethnic groups.