General Linear Models (Univariate) in SPSS was used to predict both impulsiveness and LAPS from GABRA2 SNPs. Covariates in the model were gender, age, race and DSM-IV diagnosis of AUD. To test the independent effect of SNP rs1442060, not in LD with the other SNPs, rs279827 was included as a covariate. Independent t-tests were used to compare impulsiveness and LAPS differences between subjects with and without lifetime AUD diagnosis.
