Polish Migrant Essential Workers in the UK during COVID-19: Survey Data, 2021

This data was generated in an online survey with Polish migrant essential workers (PMEW) living in the United Kingdom (UK) during the Covid-19 pandemic. It consists of two datasets. The first dataset - which we called ‘PMEW Clickers’ - contains data for all survey participants (observations: 2,061; variables: 115), while the second dataset contains only valid responses, that is responses from participants who answered at least 60% of the core survey questions (observations: 1,105; variables: 113), and we called it ‘PMEW Respondents’.The survey fieldwork was conducted online during the Covid-19 pandemic between 22 February and 12 April 2021, following the third UK-wide Covid-19 lockdown. The responses were collected using a standardised questionnaire published in two languages: Polish and English. The survey relied on a variety of non-probability and convenience sampling techniques suitable to recruit so called ‘hard-to-reach’ populations. The largest part of responses - two thirds - came from participants recruited via a dedicated Facebook advertisement campaign targeting Polish migrants in the UK who were active users of the Facebook social media at that time.The broad aim of the survey was to find out which spheres of life of PMEW were affected most by the pandemic, that is since March 2020. Overall, the survey was divided into 10 thematic blocks of questions and consisted of 40 questions. The questionnaire covered such topics as: employment situation and work experiences during the pandemic, health impacts of Covid-19 pandemic, household and caring responsibilities, economic impacts of the Covid-19 pandemic, migration status and stay plans and demographic profile (gender, age, migration legal status, length of residency, education, income). The online nature of the survey allowed us to collect additional passive data improving data usability. For example, variables generated through passive data collection recorded where our respondents came from (Facebook ads, project website, partner organisation help), which Facebook ad they clicked on to access the survey, or what was the language – Polish or English – of the questionnaire they filled in.This data repository includes a detailed methodological report (PMEW Technical report) presenting the survey design and post-fieldwork data preparation, two codebooks overviewing both datasets and questionnaires in two languages - all files were saved in a variety of commonly used and open formats. The datasets were saved in SPSS *.sav format, which can be imported to a number of statistical programmes, and as an open data format *.csv file.The research received ethical approval from the University of Glasgow (400200070) and the University of Sheffield (037633).Please read the README file in the linked metadata record for a more detailed description of the content of this repository.

本数据来源于新冠疫情期间针对居住在英国（United Kingdom，简称UK）的波兰移民必要岗位工人（Polish migrant essential workers，简称PMEW）开展的在线调查。该数据包含两个数据集：第一个数据集（命名为“PMEW Clickers”）涵盖所有调查参与者的数据（观测值：2061；变量：115）；第二个数据集仅包含有效响应——即回答了至少60%核心调查问题的参与者的响应（观测值：1105；变量：113），我们将其命名为“PMEW Respondents”。

调查实地工作于2021年2月22日至4月12日期间在线开展，正值英国第三次全国新冠疫情封锁之后。调查采用标准化问卷收集响应，问卷提供波兰语和英语两种版本。本调查采用多种非概率抽样和便利抽样技术（non-probability and convenience sampling techniques），以招募所谓的“难以接触人群”（hard-to-reach populations）。大部分响应（约三分之二）来自通过专门Facebook广告活动招募的参与者——这些广告针对当时在英国的活跃Facebook用户中的波兰移民群体。

调查的总体目标是了解自2020年3月以来，新冠疫情对波兰移民必要岗位工人（PMEW）生活的哪些领域影响最大。调查整体分为10个主题模块，共包含40个问题，涵盖以下主题：疫情期间的就业状况与工作经历、新冠疫情对健康的影响、家庭与照护责任、疫情的经济影响、移民身份与居留计划，以及人口统计特征（性别、年龄、移民法律身份、居留时长、教育程度、收入）。调查的在线性质使其能够收集额外的被动数据（passive data），从而提升数据可用性。例如，通过被动数据收集生成的变量记录了受访者的来源渠道（Facebook广告、项目网站、合作机构协助）、他们点击了哪条Facebook广告进入调查，以及填写问卷时使用的语言（波兰语或英语）。

本数据仓库包含一份详细的方法学报告（PMEW技术报告），该报告介绍了调查设计和实地工作后的数据分析准备；两份代码本，概述了两个数据集；以及两种语言版本的问卷——所有文件均以多种常用且开放的格式保存。数据集以SPSS *.sav格式（可导入多种统计软件）和开放数据格式*.csv文件保存。

本研究已获得格拉斯哥大学（University of Glasgow，伦理审批号：400200070）和谢菲尔德大学（University of Sheffield，伦理审批号：037633）的伦理批准。请参阅关联元数据记录中的README文件，以获取本仓库内容的更详细描述。