AUD onset if they were unaffected for both past and current AUD at Wave I (those affected at Wave II were coded as onset = 1, all others = 0), and (c) AUD recurrence if they met criteria for past AUD, but not for current AUD, at Wave I (those affected Wave II were coded as recurrent = 1, all others = 0). This method of coding allows for the differentiation of continued, new, and recurring episodes of AUD. As noted by Grant et al. (2011), this is an important distinction, as the likelihood of AUD transitions among participants “at risk” for each outcome are expected to vary from the likelihood of AUD transitions calculated as a proportion of the population overall.
