The phenotypic inter-correlations between our measures of AC and AD are seen in Table 1. The correlations between the four measures of AC were substantial, ranging from+0.49 to +0.73 in males and +0.56 to +0.86 in females. In both sexes, the lowest correlation was seen between drink frequency and regular quantity, and the highest between regular quantity and maximum quantity. The correlations between the AC measures and AD were also high, ranging from +0.60 to +0.67 in males, and +0.61 to +0.76 in females. In males, the liability to AD was most highly correlated with maximum quantity while in females the highest correlation was seen with drunk frequency.
