35 Review of social network intervention studies 2 Figure 1. Study selection. 16192 records identified through database 6733 records after duplicates removed 9402 records excluded 4458 wrong population 2483 wrong study design 1547 wrong publication type 755 wrong intervention 147 wrong age 6 wrong outcome 6 wrong language 9490 records screened by checking title and abstract 52 full text articles excluded 35 wrong intervention 10 wrong population 6 wrong outcomes 1 wrong study design 88 full text articles assessed for eligibility 36 studies included in meta-analysis Identification Screening Eligibility Included 31 records identified through hand searching Figure 1. Study selection.
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