Does advance contact with research participants increase response to questionnaires: an updated 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 10 years old, and lacked a risk of bias assessment.

Objectives

Update the section of the Cochrane systematic review, Edwards et al. (2009), on pre-notification to include 1) recently published studies, 2) an assessment of risk of bias, 3) Explore if heterogeneity is reduced by: delay between pre-contact and questionnaire delivery, the method of pre-contact, if pre-contact and question

SUBMITTER: Woolf B 

PROVIDER: S-EPMC8627623 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature