Of the fathers who had data on ADS (n= 805), 31.1% endorsed zero ADS and 40.9% endorsed 3 or more ADS, which met the clinical diagnosis for DSM-IV alcohol dependence. Of the mothers who provided data on ADS (n = 1,177), 46.3% endorsed zero ADS, and 25.7% endorsed 3 or more ADS. We used ADS rather than alcohol dependence diagnosis in order to increase power for analysis. Of the families where ADS data are available both for father and mother (n = 706), 25.2%, 8.2%, and 13.6% had only father, only mother, and both parents met diagnosis for alcohol dependence, respectively.
