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Extra resources for Applying Respondent Driven Sampling to Migrant Populations: Lessons from the Field

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An incentive not only for participation, but also for recruitment, encourages traditionally hesitant individuals to participate in the survey, thereby reducing non-response. 0008 Sampling Migrants  response rates. Finally, the use of coupons with unique numbers or codes allows respondents to remain anonymous, also reducing non-response bias. More hidden types of migrants, who normally would not participate in a survey, may feel more comfortable in enrolling knowing that researchers will not have any personal information that can be used to contact them later.

0011. 0011   Agnieszka Kubal, Inna Shvab and Anna Wojtynska Introduction Researchers, who have used Respondent Driven Sampling (RDS) often, in hindsight, asked themselves: “what do we wish we had known before embarking on the first RDS survey”? The response is often: how to initiate the RDS recruitment process – how to select the initial respondents and make them work as they were supposed to; in other words: to plant the seeds in such a way that they would grow and bear fruit. This chapter focuses on initiating the RDS recruitment process, and examines the role of the seeds: the first respondents in surveys using RDS methodology.

In the subsequent waves, more unmarried people appear, resulting in a mix of married and unmarried individuals. Although RDS theory is based on an assumption that the seeds need not be diverse with respect to characteristics, having diverse seeds will help attain equilibrium more quickly (Heckathorn, 1997). 1  Initial seed bias in recruitment of married and unmarried respondents Legend: grey – married, black – unmarried Source: Authors’ simulation. target population, sub-groups according to, for instance, gender, ethnicity, education, and socio-economic status will not be completely isolated from each other.

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