Population-based assessment of health, healthcare utilisation, and specific needs of Syrian migrants in Germany: what is the best sampling method?

Weinmann, Tobias; AlZahmi, Amal; Schneck, Andreas; Charry, Julian Felipe Mancera; Fröschl, Günter; Radon, Katja

doi:10.1186/s12874-018-0652-1

Cited by 17 publications

(25 citation statements)

References 52 publications

(47 reference statements)

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“…However, we might not be able to reach high response especially in specific groups of the target population, e.g. subjects with migration background as they are generally harder to reach in epidemiological studies [38] and because time constraints impede the development of study documents in other languages than German at the initiation of the study. Likewise, the spread of SARS-CoV-2 varies locally and depends on several factors, such as the time course of the infection in the respective region, the population density and age distribution of the population, the available capacities and the applied countermeasures.…”

Section: Discussionmentioning

confidence: 96%

Protocol of a population-based prospective COVID-19 cohort study Munich, Germany (KoCo19)

Radon¹,

Saathoff

Pritsch

et al. 2020

BMC Public Health

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Background: Due to the SARS-CoV-2 pandemic, public health interventions have been introduced globally in order to prevent the spread of the virus and avoid the overload of health care systems, especially for the most severely affected patients. Scientific studies to date have focused primarily on describing the clinical course of patients, identifying treatment options and developing vaccines. In Germany, as in many other regions, current tests for SARS-CoV2 are not conducted on a representative basis and in a longitudinal design. Furthermore, knowledge about the immune status of the population is lacking. Nonetheless, these data are needed to understand the dynamics of the pandemic and hence to appropriately design and evaluate interventions. For this purpose, we recently started a prospective population-based cohort in Munich, Germany, with the aim to develop a better understanding of the state and dynamics of the pandemic. Methods: In 100 out of 755 randomly selected constituencies, 3000 Munich households are identified via random route and offered enrollment into the study. All household members are asked to complete a baseline questionnaire and subjects ≥14 years of age are asked to provide a venous blood sample of ≤3 ml for the determination of SARS-CoV-2 IgG/IgA status. The residual plasma and the blood pellet are preserved for later genetic and molecular biological investigations. For twelve months, each household member is asked to keep a diary of daily symptoms, whereabouts and contacts via WebApp. If symptoms suggestive for COVID-19 are reported, family members, including children < 14 years, are offered a pharyngeal swab taken at the

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Section: Discussionmentioning

confidence: 96%

Protocol of a population-based prospective COVID-19 cohort study Munich, Germany (KoCo19)

Radon¹,

Saathoff

Pritsch

et al. 2020

BMC Public Health

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“…Six studies took place in the United States [ 8 , 17 - 21 ], 6 studies took place in Western Europe [ 22 - 27 ], 4 studies took place in southeast Asia [ 23 , 28 - 31 ], and 2 studies took place in Oceania [ 32 , 33 ]. Studies were published between 2008 and 2019, with the majority [ 17 , 18 , 22 - 24 , 26 , 27 , 30 , 32 , 33 ] from 2015 onward (see Table 3 ).…”

Section: Resultsmentioning

confidence: 99%

“…In 12 studies, participants were recruited with the aim of generating population estimates [ 8 , 19 - 23 , 26 , 28 , 29 , 31 - 33 ]; 3 studies aimed to study social networks and contact patterns relevant to the spread of infectious diseases [ 24 , 25 , 28 ], and 3 studies recruited participants for delivering interventions [ 17 , 18 , 27 ].…”

Section: Resultsmentioning

confidence: 99%

Applications and Recruitment Performance of Web-Based Respondent-Driven Sampling: Scoping Review

Helms¹,

Hamdiui²,

Kretzschmar³

et al. 2021

J Med Internet Res

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Background Web-based respondent-driven sampling is a novel sampling method for the recruitment of participants for generating population estimates, studying social network characteristics, and delivering health interventions. However, the application, barriers and facilitators, and recruitment performance of web-based respondent-driven sampling have not yet been systematically investigated. Objective Our objectives were to provide an overview of published research using web-based respondent-driven sampling and to investigate factors related to the recruitment performance of web-based respondent-driven sampling. Methods We conducted a scoping review on web-based respondent-driven sampling studies published between 2000 and 2019. We used the process evaluation of complex interventions framework to gain insights into how web-based respondent-driven sampling was implemented, what mechanisms of impact drove recruitment, what the role of context was in the study, and how these components together influenced the recruitment performance of web-based respondent-driven sampling. Results We included 18 studies from 8 countries (high- and low-middle income countries), in which web-based respondent-driven sampling was used for making population estimates (n=12), studying social network characteristics (n=3), and delivering health-related interventions (n=3). Studies used web-based respondent-driven sampling to recruit between 19 and 3448 participants from a variety of target populations. Studies differed greatly in the number of seeds recruited, the proportion of successfully recruiting participants, the number of recruitment waves, the type of incentives offered to participants, and the duration of data collection. Studies that recruited relatively more seeds, through online platforms, and with less rigorous selection procedures reported relatively low percentages of successfully recruiting seeds. Studies that did not offer at least one guaranteed material incentive reported relatively fewer waves and lower percentages of successfully recruiting participants. The time of data collection was shortest in studies with university students. Conclusions Web-based respondent-driven sampling can be successfully applied to recruit individuals for making population estimates, studying social network characteristics, and delivering health interventions. In general, seed and peer recruitment may be enhanced by rigorously selecting and motivating seeds, offering at least one guaranteed material incentive, and facilitating adequate recruitment options regarding the target population’s online connectedness and communication behavior. Potential trade-offs should be taken into account when implementing web-based respondent-driven sampling, such as having less opportunities to implement rigorous seed selection procedures when recruiting many seeds, as well as issues around online rather than physical participati...

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“…Herkömmliche Zugangswege (z. B. Einwohnermeldeamt) greifen hierfür oftmals nicht [1]. Eine Reihe von Barrieren müssen bei der Rekrutierung berücksichtigt werden; allen voran sprach-und kulturspezifische Barrieren.…”

Section: Diskussionunclassified

“…Studien mit Geflüchteten stellen Forscher vor eine Reihe von Herausforderungen. Insbesondere die Erreichbarkeit von Geflüchteten -sie zählen in der Forschung zu den so genannten seltenen Populationen -gilt als schwierig [1]. Etablierte Standardmethoden zur Rekrutierung von Studienteilnehmern greifen oftmals nicht.…”

Section: Introductionunclassified

Strategien zur Rekrutierung von Geflüchteten für Interventionsstudien: Erkenntnisse aus dem „Sanadak“-Trial

Röhr

Wittmann

Jung

et al. 2019

Psychother Psych Med

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Zusammenfassung Ziel Die Rekrutierung von sogenannten seltenen Populationen, dazu zählen Geflüchtete, für Forschungsstudien gilt als schwierig. Deshalb teilen wir Erkenntnisse zu förderlichen und hinderlichen Strategien zur Rekrutierung von Geflüchteten sowie wahrgenommene Barrieren basierend auf unseren Erfahrungen im „Sanadak“-Trial, einer randomisierten kontrollierten Studie zur Evaluation einer Selbsthilfe-App für syrische Geflüchtete mit posttraumatischer Belastung. Methodik Datengrundlage war eine Interimsevaluation der Rekrutierungsstrategien. Im quantitativen Teil analysierten wir, wie Studieninteressierte von „Sanadak“ erfahren haben und über welchen Weg der Erstkontakt stattfand. Diese Ergebnisse wurden durch einen qualitativen Teil ergänzt. Dazu wurden die syrischen Studienassistenten des „Sanadak“-Trials (n=3) mittels problemzentrierter Leitfadeninterviews zu förderlichen und hinderlichen Rekrutierungsstrategien sowie wahrgenommenen Barrieren befragt. Ergebnisse Es lagen Daten zur Rekrutierung von 140 syrischen Geflüchteten vor. Davon wurde fast die Hälfte (44%) über persönlichen Kontakt rekrutiert, rund ein weiteres Drittel (36%) wurde über verschiedene Werbemaßnahmen (z. B. Facebook-Werbung) und rund ein Fünftel (19%) über Multiplikatoren gewonnen. Typische Barrieren waren Bedenken hinsichtlich Datenschutz, Anonymität und Stigmatisierung. Diskussion Das Schneeballprinzip war eine effektive Rekrutierungsstrategie im „Sanadak“-Trial. Weitere Strategien waren ergänzend sinnvoll, v. a. um die Varianz der Stichprobe zu erhöhen. Die Interimsevaluation erwies sich als wertvoll, um Ressourcen auf effektive Rekrutierungsstrategien zu lenken und Barrieren zu adressieren. Schlussfolgerung Ein multistrategischer Rekrutierungsansatz mit Fokus auf persönlichen Kontakt, vielfältigen Kontaktmöglichkeiten und interkulturell kompetenten Projektmitarbeitern hat sich im „Sanadak“-Trial bewährt.

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Population-based assessment of health, healthcare utilisation, and specific needs of Syrian migrants in Germany: what is the best sampling method?

Cited by 17 publications

References 52 publications

Protocol of a population-based prospective COVID-19 cohort study Munich, Germany (KoCo19)

Protocol of a population-based prospective COVID-19 cohort study Munich, Germany (KoCo19)

Applications and Recruitment Performance of Web-Based Respondent-Driven Sampling: Scoping Review

Strategien zur Rekrutierung von Geflüchteten für Interventionsstudien: Erkenntnisse aus dem „Sanadak“-Trial

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