LSOA (2011) to LSOA (2021) to Local Authority District (2022) Exact Fit Lookup for EW (V3)

This is an exact fit lookup file between Lower layer Super Output Areas as at December 2011 and Lower layer Super Output Areas as at December 2021 and Local Authority Districts as at December 2022 in England and Wales. This product has been provided with a 'change indicator' field, that define the lookup between 2011 and 2021 LSOA. This field indicates which super output areas have changed between 2011 and 2021. This is a version 3 of the lookup where the Change Indicator has been changed from splits to complex in less than 10 LSOAs and four 2011 LSOAs - Shepway 014E to Shepway 014H corrected to Shepway 015A - Shepway 015D There are four designated categories to describe the changes, and these are as follows: U - No Change from 2011 to 2021. This means that direct comparisons can be made between these 2011 and 2021 LSOA. S - Split. This means that the 2011 LSOA has been split into two or more 2021 LSOA. There will be one record for each of the 2021 LSOA that the 2011 LSOA has been split into. This means direct comparisons can be made between estimates for the single 2011 LSOA and the estimates from the aggregated 2021 LSOA. M - Merged. 2011 LSOA have been merged with another one or more 2011 LSOA to form a single 2021 LSOA. This means direct comparisons can be made between the aggregated 2011 LSOAs’ estimates and the single 2021 LSOA’s estimates. X - The relationship between 2011 and 2021 LSOA is irregular and fragmented. This has occurred where 2011 LSOA have been redesigned because of local authority district boundary changes, or to improve their social homogeneity. These can’t be easily mapped to equivalent 2021 LSOA like the regular splits (S) and merges (M), and therefore like for like comparisons of estimates for 2011 LSOA and 2021 LSOA are not possible. Field Names – LSOA11CD, LSOA11NM, CHGIND, LSOA21CD, LSOA21NM, LAD22CD, LAD22NM, LAD22NMW Field Types – Text, Text, Text, Text, Text, Text, Text, Text Field Lengths – 9, 33, 1, 9, 40, 9, 35, 24本数据集为英格兰及威尔士地区2011年12月版下级超级输出区域（Lower layer Super Output Areas，LSOA）、2021年12月版下级超级输出区域与2022年12月版地方当局区域（Local Authority Districts，LAD）之间的精准匹配映射文件。 本产品附带“变更标识”字段，用于定义2011版与2021版LSOA之间的匹配关系，该字段可标识2011至2021年间发生变更的超级输出区域。本数据集为第3版，其中针对不足10个LSOA的变更标识从拆分类型调整为复杂类型，并修正了4个2011版LSOA：原Shepway 014E至Shepway 014H已更正为Shepway 015A至Shepway 015D。 本次数据集共设置四类变更描述类别，具体如下： - U：2011至2021年无变更。此类区域可直接进行2011版与2021版LSOA的比对分析。 - S：拆分。即单个2011版LSOA被拆分为两个及以上2021版LSOA，每个拆分出的2021版LSOA对应一条记录。此时可将单个2011版LSOA的统计估算值与聚合后的对应2021版LSOA估算值进行直接比对。 - M：合并。即单个或多个2011版LSOA合并为单个2021版LSOA，此时可将聚合后的2011版LSOA统计估算值与单个2021版LSOA估算值进行直接比对。 - X：关系不规则且碎片化。该情况多因地方当局区域边界调整或为提升社会同质性而对2011版LSOA进行重新划定导致，无法像常规拆分（S）与合并（M）那样直接映射至对应的2021版LSOA，因此无法实现2011版与2021版LSOA统计估算值的类同比对。 字段规范如下： 1. 字段名称：LSOA11CD、LSOA11NM、CHGIND、LSOA21CD、LSOA21NM、LAD22CD、LAD22NM、LAD22NMW 2. 字段类型：均为文本（Text） 3. 字段长度：依次为9、33、1、9、40、9、35、24