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Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin

Retention is important for statistical power and external validity in long-term cohort studies. The aims of our study were to evaluate different retention strategies within a cohort study of adults of Turkish descent in Berlin, Germany, and to compare participants and non-participants. In 2011–2012,...

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Autores principales: Dornquast, Christina, Reinhold, Thomas, Solak, Saliha, Durak, Melike, Becher, Heiko, Riens, Burgi, Icke, Katja, Danquah, Ina, Willich, Stefan N., Keil, Thomas, Krist, Lilian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9388466/
https://www.ncbi.nlm.nih.gov/pubmed/34797452
http://dx.doi.org/10.1007/s10903-021-01309-1
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author Dornquast, Christina
Reinhold, Thomas
Solak, Saliha
Durak, Melike
Becher, Heiko
Riens, Burgi
Icke, Katja
Danquah, Ina
Willich, Stefan N.
Keil, Thomas
Krist, Lilian
author_facet Dornquast, Christina
Reinhold, Thomas
Solak, Saliha
Durak, Melike
Becher, Heiko
Riens, Burgi
Icke, Katja
Danquah, Ina
Willich, Stefan N.
Keil, Thomas
Krist, Lilian
author_sort Dornquast, Christina
collection PubMed
description Retention is important for statistical power and external validity in long-term cohort studies. The aims of our study were to evaluate different retention strategies within a cohort study of adults of Turkish descent in Berlin, Germany, and to compare participants and non-participants. In 2011–2012, a population-based study was conducted among adults of Turkish descent to primarily examine recruitment strategies. 6 years later, the participants were re-contacted and invited to complete a self-report questionnaire regarding their health status, health care utilization, and satisfaction with medical services. The retention strategy comprised letters in both German and Turkish, phone calls, and home visits (by bilingual staff). We calculated the response rate and retention rate, using definitions of the American Association for Public Opinion Research, as well as the relative retention rate for each level of contact. Associations of baseline recruitment strategy, sociodemographic, migration-related and health-related factors with retention were investigated by logistic regression analysis. Of 557 persons contacted, 249 (44.7%) completed the questionnaire. This was 50.1% of those whose contact information was available. The relative retention rate was lowest for phone calls (8.9%) and highest for home visits (18.4%). Participants were more often non-smokers and German citizens than non-participants. For all remaining factors, no association with retention was found. In this study, among adults of Turkish descent, the retention rate increased considerably with every additional level of contact. Implementation of comprehensive retention strategies provided by culturally matched study personnel may lead to higher validity and statistical power in studies on migrant health issues. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s10903-021-01309-1.
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spelling pubmed-93884662022-08-20 Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin Dornquast, Christina Reinhold, Thomas Solak, Saliha Durak, Melike Becher, Heiko Riens, Burgi Icke, Katja Danquah, Ina Willich, Stefan N. Keil, Thomas Krist, Lilian J Immigr Minor Health Original Paper Retention is important for statistical power and external validity in long-term cohort studies. The aims of our study were to evaluate different retention strategies within a cohort study of adults of Turkish descent in Berlin, Germany, and to compare participants and non-participants. In 2011–2012, a population-based study was conducted among adults of Turkish descent to primarily examine recruitment strategies. 6 years later, the participants were re-contacted and invited to complete a self-report questionnaire regarding their health status, health care utilization, and satisfaction with medical services. The retention strategy comprised letters in both German and Turkish, phone calls, and home visits (by bilingual staff). We calculated the response rate and retention rate, using definitions of the American Association for Public Opinion Research, as well as the relative retention rate for each level of contact. Associations of baseline recruitment strategy, sociodemographic, migration-related and health-related factors with retention were investigated by logistic regression analysis. Of 557 persons contacted, 249 (44.7%) completed the questionnaire. This was 50.1% of those whose contact information was available. The relative retention rate was lowest for phone calls (8.9%) and highest for home visits (18.4%). Participants were more often non-smokers and German citizens than non-participants. For all remaining factors, no association with retention was found. In this study, among adults of Turkish descent, the retention rate increased considerably with every additional level of contact. Implementation of comprehensive retention strategies provided by culturally matched study personnel may lead to higher validity and statistical power in studies on migrant health issues. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s10903-021-01309-1. Springer US 2021-11-19 2022 /pmc/articles/PMC9388466/ /pubmed/34797452 http://dx.doi.org/10.1007/s10903-021-01309-1 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Paper
Dornquast, Christina
Reinhold, Thomas
Solak, Saliha
Durak, Melike
Becher, Heiko
Riens, Burgi
Icke, Katja
Danquah, Ina
Willich, Stefan N.
Keil, Thomas
Krist, Lilian
Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin
title Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin
title_full Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin
title_fullStr Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin
title_full_unstemmed Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin
title_short Strategies to Enhance Retention in a Cohort Study Among Adults of Turkish Descent Living in Berlin
title_sort strategies to enhance retention in a cohort study among adults of turkish descent living in berlin
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9388466/
https://www.ncbi.nlm.nih.gov/pubmed/34797452
http://dx.doi.org/10.1007/s10903-021-01309-1
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