2021
DOI: 10.1101/2021.02.19.21252094
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Does advance contact with research participants increase response to questionnaires: A Systematic Review and meta-Analysis

Abstract: Background: Questionnaires remain one of the most common forms of data collection in epidemiology, psychology and other human-sciences. However, results can be badly affected by non-response. One way to potentially reduce non-response is by sending potential study participants advance communication. The last systematic review to examine the effect of questionnaire pre-notification on response is ten years old, and lacked a risk of bias assessment. Objectives: Update Edwards et al. (2009) to include 1) recentl… Show more

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Cited by 2 publications
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“…When the selected respondents were not ready to participate in the survey, the next possible respondent was approached. This might generate the issue of non-response bias; therefore, authors and data collectors tried to reach as many people as possible to mitigate the impact of non-response bias (Woolf and Edwards, 2021). Moreover, to overcome the imbalance of respondent selection from different communities, each community was weighted based on the population's density and the number of public locations.…”
Section: Methodsmentioning
confidence: 99%
“…When the selected respondents were not ready to participate in the survey, the next possible respondent was approached. This might generate the issue of non-response bias; therefore, authors and data collectors tried to reach as many people as possible to mitigate the impact of non-response bias (Woolf and Edwards, 2021). Moreover, to overcome the imbalance of respondent selection from different communities, each community was weighted based on the population's density and the number of public locations.…”
Section: Methodsmentioning
confidence: 99%