In the first column of Table 1, the clinical characteristics of the subsample reporting LTH-AD at time 1 are presented. In the next column the characteristics of those who also reported LTH-AD at time 2 are given. For example, 67% of all subjects meeting an LTH-AD diagnosis at time 1 also report the same at time 2. However, among those whose most severe episode lasted more than 60 months, 80% were in agreement at both time points.
