As described above, PAWH was measured using a self-report questionnaire where participants estimated (on a 10 point scale) first, the frequency and then, the distress level of physical and psychological symptoms experienced during alcohol withdrawal. Although neither group experienced a high frequency or intensity of PAWH, TNAD experienced both a greater frequency and intensity of PAWH than did NAC. For TNAD, the mean score (± sd) for the frequency of withdrawal symptoms was 2.06 ± 1.4 meaning that, on average, they experienced withdrawal symptoms after drinking 20% of the time. On the distress level scale (10 point scale), a zero indicated that the withdrawal symptoms bothered the participant “not at all”, a three indicated that the symptoms were “a little bothersome” and five indicated that the symptoms were “somewhat bothersome”. For TNAD, the mean score for distress was 2.70 ± 1.68, indicating that the participants typically found the distress of withdrawal symptoms less then “a little bothersome”. There were no significant associations between N2 or P3 measures and PAWH measures within either group.
