Table 2 Specific information to be recorded for every study included in the review. For studies that compare performance between two or more groups of participants, the sample characteristics will be recorded for each group separately. For continuous variables (e.g. age, level of substance use engagement), the mean, standard deviation, and range will be recorded. For discrete or categorical data (e.g. gender, diagnoses, treatment status), the number of participants in the sample who fall into each classification will be recorded

Sample characteristics

Age

Gender

SUAD diagnoses (if applicable); years of diagnosis

Level of substance use or behaviour engagement/severity (e.g. number of cigarettes smoked per day; score on validated measure of addictive behaviour)

Treatment status (number of participants in inpatient or outpatient treatment, seeking treatment, not seeking treatment)

Substance use abstinence period before study; requirement to refrain from use before study

Neuromodulation parameters

Type of neuromodulation (i.e. tDCS, TMS); stimulation pattern/frequency for TMS (i.e. single-pulse, repetitive, theta-burst, patterned)

Position of stimulating electrodes (tDCS) or coil (TMS)

Stimulation intensity

Stimulation duration

Stimulation frequency (for tDCS and repetitive TMS)

Number of sessions of stimulation; interval between sessions (if repeated sessions)

Number of pulses; duration of stimulation trains and inter-train intervals (TMS)

Electrode sizes (tDCS); coil type (TMS)

Inclusion and details of sham condition

Experimental design

Within-subject or between-subject comparisons

Single- or double-blind

Type of control condition (e.g. sham stimulation; control group; control task)

Online or offline delivery of neuromodulation (relative to cognitive task)

Measure of cognitive function

Cognitive task/paradigm

Cognitive function(s) being measured

Description of stimulus/cue type (if appropriate)

Number of trials; task length

Counterbalancing/order of conditions (if appropriate)

Time of task relative to stimulation

Results

Descriptive statistics for condition/group means

Test statistics for condition/group comparisons

P values for condition/group comparisons

Effect sizes for condition/group comparisons

95% confidence intervals for condition/group comparisons