Tables 2 and 3 further quantify these associations. In Table 2, respondents exposed to a lower MLDA were significantly more likely to have a past-year alcohol use disorder. Column 1 shows logistic regression results using the NLAES sample, controlling for state and year fixed effects, gender, black and Hispanic ethnicity, and age group. The odds ratio for a current alcohol use disorder associated with exposure to a lower drinking age was 1.33 (95% c.i. 1.15 to 1.54, p < .0001). In the NESARC sample (Column 2), the odds ratio is 1.31, (95% c.i.1.07 to 1.61, p = .009), and in the combined sample (Column 3), the odds ratio is again 1.31 (95% c.i. 1.18 to 1.46, p < .0001)). The similarity of the MLDA estimates in the NLAES and NESARC samples and the non-significance of an interaction term between MLDA status and sample indicator supports the statistical appropriateness of the pooling of samples. In Column 4, the estimate was little changed by inclusion of lifetime abstention status and a linear measure of age of onset of regular drinking, parental drinking
