Editing Snowball sampling (section)

===Respondent-driven sampling===
A new approach to the study of hidden populations. It is effectively used to avoid bias in snowball sampling. Respondent-driven sampling involves both a field sampling technique and custom estimation procedures that correct for the presence of homophily on attributes in the population. The respondent-driven sampling method employs a dual system of structured incentives to overcome some of the deficiencies of such samples. Like other chain-referral methods, RDS assumes that those best able to access members of hidden populations are their own peers.<ref>{{Cite web |title=What is Respondent Driven Sampling ? |url=http://www.respondentdrivensampling.org/reports/RDSsummary.htm |access-date=2022-11-17 |website=respondentdrivensampling.org}}</ref>