Table 2 Standardised measures administered

Alcohol Timeline Followback (TLFB) Questionnaire [13]; primary outcome measure

Measures alcohol use during the 4 months immediately prior to patients’ entering treatment

Drinking Urges Questionnaire [22]; secondary outcome measure

Assesses participants’ desire to drink, expectations of positive effects following drinking, relief of withdrawal and negative affect following drinking, and intentions to drink

Obsessive Compulsive Drinking Scale (OCDS) [23]; secondary outcome measure

Measures respondents’ obsessive thoughts about alcohol use and compulsive behaviours related to drinking

Alcohol Stroop Test [24]; secondary outcome measure

Measures alcohol-related attentional distraction by alcohol-related stimuli

Severity of Alcohol Dependence Questionnaire [25]; primary outcome measure

Measures the degree to which patients are physically and psychologically dependent on alcohol

Thought Control Questionnaire (TCQ) [26]; BRAINTRAIN core outcome measure

Assesses the effectiveness of strategies used to control unpleasant or unwanted thoughts

Thought Control Ability Questionnaire (TCAQ) [27]; BRAINTRAIN core outcome measure

Measures individuals’ perceived ability to control unwanted and intrusive thoughts

Profile of Mood States (POMS) [28]; BRAINTRAIN core outcome measure

Measures anger, confusion, depression, fatigue, tension, and vigour

Hospital Anxiety and Depression Scale (HADS) [29]; BRAINTRAIN core outcome measure

Measure anxiety and depression

Beck Depression Inventory (BDI) [30]; BRAINTRAIN core outcome measure

Measures depression