ABSTRACT

This study is a meta-analysis of overall recruitment rate (ORR) in probability-based online panel research. In this study, we included 23 general population probability-based online panels (out of 28 identified and described) covering 15 countries and provided a comprehensive overview of their methodological approaches to recruitment. We calculated the average ORR and carried out a meta-regression with selected moderators. On average less than 1 out of 5 eligible sampled people registered as panel members, but the data showed a very high heterogeneity of ORRs. We found that recruitment rates were similar in telephone, face-to-face, and mail modes in the United States (U.S.), but the mail mode performed worse than the interviewer-administered recruitment modes in the rest of the world. Also, we identified a small decrease of ORR over time and provided evidence on how ORRs are significantly lower in the U.S. probability-based online panels.

摘要

本研究是基于概率的在线小组研究中总体招募率（ORR）的荟萃分析。在这项研究中，我们纳入了覆盖 15 个国家的 23 个基于一般人群概率的在线小组（已识别和描述的 28 个），并全面概述了他们的招募方法。我们计算了平均 ORR，并与选定的调节者进行了元回归。平均而言，只有不到五分之一的合格样本注册为小组成员，但数据显示 ORR 的异质性非常高。我们发现，在美国，电话、面对面和邮件模式的招聘率相似，但在世界其他地区，邮件模式的表现比面试官管理的招聘模式差。还，