Snowball sampling via word-of-mouth on social media yields higher survey completion rates, more female and new users, and shorter responses compared to direct river sampling from ads.
Methods to recruit hard-to-reach groups comparing two chain referral sampling methods of recruiting injecting drug users across nine studies in Russia and Est onia
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Online word-of-mouth in West Africa: the effects of snowball sampling on completion rate, respondent demographics, and survey responses
Snowball sampling via word-of-mouth on social media yields higher survey completion rates, more female and new users, and shorter responses compared to direct river sampling from ads.