The following items were extracted from the full texts of the selected articles:

Bibliometrics: authors, title, source, year of publication.

Characteristics of the study: country(s) and year in which the study was conducted, project title/database title, sample size (number of participants and number of networks), type of sample (general sample or at-risk group), age of participants.

Study design: number and frequency of survey waves (and lag between waves), data collection techniques, name generator questions (types of social ties and maximum number of nominations).

Description of alcohol use behavior (frequency of drinking, binge drinking etc.) and the number of categories in the alcohol measuring scale.

Covariates included in the model: gender; age; personality characteristics; other behaviors (smoking, physical activity etc.); family and school factors (parental control, parental drinking, school level of alcohol use etc.)

Response rate and attrition rate, description of missing data, treatment of missing data.

Model specification: influence and selection effects; structural effects.

Effect size data: parameter coefficients (log odds ratios) and standard errors for selection and influence effects, behavior dynamics effects, network structural effects.

Characteristics of the selected studies are presented in S3 Appendix.

Note: The content above has been extracted from a research article, so it may not display correctly.

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