Data-Field 20270
This information is regarded as restricted and will be supplied to researchers only when absolutely necessary.
See the Related Data-Fields tab below for any unrestricted alternatives.
Data
612,108 items of data are available, covering 500,956 participants.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Average length is 9.0 characters, longest is 9.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
500,820 participants, 500,820 items
Too few values for statistical summary.
Instance 1 : First repeat assessment visit (2012-13)
20,318 participants, 20,318 items
Too few values for statistical summary.
Instance 2 : Imaging visit (2014+)
82,770 participants, 82,770 items
Too few values for statistical summary.
Instance 3 : First repeat imaging visit (2019+)
8,200 participants, 8,200 items
Too few values for statistical summary.
Notes
This field contains 2001 Census output areas corresponding to each participant's home address at assessment.
Census output areas are built from clusters of adjacent unit postcodes and were designed to have similar population sizes and be as socially homogenous as possible. Output areas in Scotland are smaller than in England and Wales.
Output Area fields will only be released following special approval. If access is approved, researchers will be required to hold these data-fields separately from their main project (a new set of encoded ids will be supplied) while they derive their required measures, which will then be made available to their main project only after these fields have been deleted.
For most purposes, higher aggregations of census/administrative areas will provide sufficient information on location of residence at assessment. These rounded values are found in Field 20271 and Field 20272.
3 Related Data-Fields
| Field ID | Description | Relationship |
|---|
| 20271 | Home location at assessment - Lower ... | Field 20271 is a higher aggregation of Current Field |
| 20269 | Home location at assessment - Output ... | Field 20269 is the superseded (archived) coding of Current Field |
| 20273 | Home location at assessment - Output ... | Current Field is the 2001 census equivalent of Field 20273 |
