Is there someone other than PI that you would like to designate to answer specific follow-up questions about the dataset (e.g. a postdoc)? Please write their email address here.

Is data still being collected to complete the study?

If you're selecting 'cohort' your 'number of cases' (a question listed below) will be 0 by default.

Was neuroimaging data collected in some subjects at more than one time point?

What is the total size (combined cases and controls) of the sample (e.g. N=350)?

What is the age range (minimum-maximum) of the combined sample (e.g. 54.6-91.0 years)?

(e.g. alcohol, nicotine, cannabis, etc.)

In case of cohort, please select unspecified

What measure was used to assess problematic use?

If the case sample is abstinent, what is the average duration of abstinence (e.g. 2 weeks, 6 months)? If the case sample is not abstinent, mark as n/a

If the sample is currently using, indicate minimum number of days of abstinence before neuroimaging. If the case sample is not currently using, mark as N/A.

What measures were used to assess psychiatric comorbidity? If not assessed, mark as n/a

What standardized personality measures were obtained (e.g. Barratt Impulsivity Scale [BIS])? What measures were used to assess IQ? If not assessed, mark as n/a. What behavioral tasks were used to assess executive functions such as working memory or response inhibition? What measures were used to assess memory function (i.e., immediate and/or delayed)?

Please indicate magnetic field strength and manufacturer of scanner(s) used to acquire the MR images;                                          e.g. 1.5T Siemens Sonata and 1.5T Siemens Avanto at 2 sites.

If you would like to cite a paper describing the scanner sequence or image pre-processing, list it here.                                      Example: van der Kouwe, A.J., Benner, T., Salat, D.H. & Fischl, B. Brain morphometry with multiecho MPRAGE. Neuroimage 40, 559-69 (2008).

Number of cases specifically from whom DTI  images were acquired

List of fMRI tasks imaged

Number of individuals from whom resting-state fMRI images were acquired

Number of cases specifically from whom resting-state fMRI images were acquired

Please provide the total number of samples genotyped

Please give the full name of the genotype platform(s) and any additional version numbers used for the sample (e.g. Illumina Human610-Quad BeadChip v1)

What imputation software (and version) did you use? If you followed the ENIGMA Imputation protocols, the imputation software is Minimac (release 2012-05-29). If unknown, leave blank.

What reference panel did you use for the imputation (and version)? If you followed the ENIGMA Imputation protocols, the reference panel is EUR 1000 Genomes (phase 1 version 3; November 2010). If unknown, leave blank.