Data-Field 20273
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
611,819 items of data are available, covering 500,746 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
500,610 participants, 500,610 items
Too few values for statistical summary.
Instance 1 : First repeat assessment visit (2012-13)
20,304 participants, 20,304 items
Too few values for statistical summary.
Instance 2 : Imaging visit (2014+)
82,709 participants, 82,709 items
Too few values for statistical summary.
Instance 3 : First repeat imaging visit (2019+)
8,196 participants, 8,196 items
Too few values for statistical summary.
Notes
This field contains 2011 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 20274, Field 20275 and Field 20276.
2 Related Data-Fields
| Field ID | Description | Relationship |
|---|
| 20274 | Home location at assessment - Lower ... | Field 20274 is a higher aggregation of Current Field |
| 20270 | Home location at assessment - Output ... | Field 20270 is the 2001 census equivalent of Current Field |
