Census 2001: Individual Licenced Sample of Anonymised Records for Imputation Analysis (I-SAR)

<p><span style="color: rgb(50, 49, 50); font-family: "Open Sans", Helvetica, Arial, sans-serif; font-size: 14px;">The UK censuses took place on </span>29th April 2001<span style="color: rgb(50, 49, 50); font-family: "Open Sans", Helvetica, Arial, sans-serif; font-size: 14px;">. They were run by the Northern Ireland Statistics & Research Agency (NISRA),  General Register Office for Scotland (GROS), and the Office for National Statistics (ONS) for both England and Wales. The UK comprises the countries of England, Wales, Scotland and Northern Ireland.</span><br></p><p><span style="color: rgb(50, 49, 50); font-family: "Open Sans", Helvetica, Arial, sans-serif; font-size: 14px;">Statistics from the UK censuses help paint a picture of the nation and how we live. They provide a detailed snapshot of the population and its characteristics, and underpin funding allocation to provide public services.</span></p> The 2001 <i>Individual Licenced Sample of Anonymised Records for Imputation Analysis</i> (I-SAR) is a 3% sample of individuals for all countries of the United Kingdom, with approximately 1.84 million records. The data are available for England, Wales, Scotland and Northern Ireland. Information is included for each individual on the main demographic, health, socio-economic and household variables. The 3% sample is an increase by comparison with 2% in 1991. Some variables have been broad-banded to reduce disclosure risk. The lowest level of geography is the Government Office Region (GOR), although Inner and Outer London are separately identified. This represents a significant reduction by comparison with the 1991 where large Local Authorities (population 120,000 and over) were separately identified.<br>
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This dataset contains 173 variables, including 84 imputation flag variables. The standard version, containing 89 I-SAR variables, is available under SN 7205.<br>
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<p><span style="color: rgb(50, 49, 50); font-family: &quot;Open Sans&quot;, Helvetica, Arial, sans-serif; font-size: 14px;">英国人口普查于</span>2001年4月29日<span style="color: rgb(50, 49, 50); font-family: &quot;Open Sans&quot;, Helvetica, Arial, sans-serif; font-size: 14px;">开展。此次普查由北爱尔兰统计与研究局（Northern Ireland Statistics & Research Agency, NISRA）、苏格兰总登记处（General Register Office for Scotland, GROS）以及负责英格兰和威尔士地区的国家统计局（Office for National Statistics, ONS）联合实施。英国由英格兰、威尔士、苏格兰及北爱尔兰组成。</span><br></p><p><span style="color: rgb(50, 49, 50); font-family: &quot;Open Sans&quot;, Helvetica, Arial, sans-serif; font-size: 14px;">英国人口普查的统计数据有助于勾勒国家全貌及民众生活图景，提供了人口及其特征的详细快照，并为公共服务的资金分配奠定基础。</span></p>2001年《用于插补分析的个人许可匿名记录样本》（Individual Licenced Sample of Anonymised Records for Imputation Analysis, I-SAR）是覆盖英国所有地区的3%个人样本，包含约184万条记录。数据覆盖英格兰、威尔士、苏格兰及北爱尔兰，每条记录包含个体的主要人口统计、健康、社会经济及家庭变量信息。相较于1991年的2%样本，本次3%样本占比有所提升。部分变量采用宽频处理（broad-banded）以降低信息披露风险。地理信息的最低层级为政府办公区域（Government Office Region, GOR），但伦敦内城与外城被单独标识。这与1991年相比简化程度显著——彼时人口12万及以上的大型地方当局（Local Authorities）被单独标识。<br><br>该数据集包含173个变量，其中84个为插补标记变量（imputation flag variables）。包含89个I-SAR变量的标准版本可通过SN 7205获取。<br><br>