Other Ref.

excerpted comments from EXECUTIVE SUMMARY>>> did the polls fail? And if so why? Those are the central questions addressed in this report, which was commissioned by the American Association for Public Opinion Research (AAPOR). This report is the product of a committee convened in the Spring of 2016 with a threefold goal: evaluate the accuracy of 2016 pre-election polling for both the primaries and the general election, review variation by different survey methodologies, and identify significant differences between election surveys in 2016 and polling in prior election years.

AIDA, Masahiko 氏がJMRAのシンポジウムで発表した公開スライド。表紙の日付は発表日ではなくHPへの公開日だと思われる。

内閣府が面接法で実施している「社会意識に関する世論調査」を面接調査終了直後に郵送法でも実施して、回収状況や回答内容を比較検討したものである。2014年度調査の回収率は面接61.9%に対し郵送75.3%。「Tips/Facts」のTF-20200525で紹介したように催促はがきの文面の違いによる回収率の変化や、代理回答の状況が精査された。2015年度調査の回収率は面接60.1%に対し郵送76.6%。回答済み調査票の返送先を調査会社にするより内閣府にするほうが45票多く返送されたことや、回答選択肢の提示順（正順・逆順）による回答結果の相違などが検討された。

excerpted comments from the second paragraph>>> It has become increasingly difficult to contact potential respondents and to persuade them to participate. The percentage of households in a sample that are successfully interviewed – the response rate – has fallen dramatically. At Pew Research, the response rate of a typical telephone survey was 36% in 1997 and is just 9% today.