# UK Biobank : Data Dictionary for Application XXXXY

Date Extracted: | 9999-99-99T99:99:99
Data columns: | 33

Column | UDI | Count | Type | Description
--- | --- | --- | --- | ---
0 | eid | 502642 | Sequence | Encoded anonymised participant ID
1 | 31-0.0 | 502642 | Categorical (single) | Sex Uses data-coding 9 comprises 2 Integer-valued members in a simple list.
2 | 54-0.0 | 502642 | Categorical (single) | UK Biobank assessment centre Uses data-coding 10 comprises 24 Integer-valued members in a simple list.
3 | 54-1.0 | 20346
4 | 54-2.0 | 8000
5 | 189-0.0 | 502015 | Continuous | Townsend deprivation index at recruitment
6 | 6142-0.0 | 501771 | Categorical (multiple) | Current employment status Uses data-coding 100295 comprises 9 Integer-valued members in a simple list.
7 | 6142-0.1 | 39554
8 | 6142-0.2 | 6159
9 | 6142-0.3 | 511
10 | 6142-0.4 | 35
11 | 6142-0.5 | 3
12 | 6142-0.6 | 1
13 | 6142-1.0 | 20339
14 | 6142-1.1 | 1774
15 | 6142-1.2 | 332
16 | 6142-1.3 | 20
17 | 6142-1.4 | 1
18 | 6142-1.5 | 0
19 | 6142-1.6 | 0
20 | 6142-2.0 | 8052
21 | 6142-2.1 | 615
22 | 6142-2.2 | 119
23 | 6142-2.3 | 8
24 | 6142-2.4 | 0
25 | 6142-2.5 | 0
26 | 6142-2.6 | 0
27 | 21000-0.0 | 501743 | Categorical (single) | Ethnic background Uses data-coding 1001 comprises 22 Integer-valued members in a hierarchical tree.
28 | 21000-1.0 | 20339
29 | 21000-2.0 | 8052
30 | 21003-0.0 | 502642 | Integer | Age when attended assessment centre
31 | 21003-1.0 | 20002
32 | 21003-2.0 | 5894

### Notes

- UDI - the Unique Data Identifier for an item of data within the UK Biobank repository. The format is field_id-instance_index.array_index
- Count - the number of non-empty rows present in this dataset.
- Read 999999 rows of data, expected 999999.
- There are -9 distinct data-fields present.
- There are 4 distinct data-codings used.
- UKB reference for dataset: XXXXY/ZZZZ/ZZZZ/9.

### Data-Coding 9

comprises 2 Integer-valued members in a simple list.

# | Code | Meaning
--- | --- | ---
1 | 1 | Male
2 | 0 | Female

### Data-Coding 10

comprises 24 Integer-valued members in a simple list.

# | Code | Meaning
--- | --- | ---
1 | 11012 | Barts
2 | 11021 | Birmingham
3 | 11011 | Bristol
4 | 11008 | Bury
5 | 11003 | Cardiff
6 | 11024 | Cheadle (revisit)
7 | 11020 | Croydon
8 | 11005 | Edinburgh
9 | 11004 | Glasgow
10 | 11018 | Hounslow
11 | 11010 | Leeds
12 | 11016 | Liverpool
13 | 11001 | Manchester
14 | 11017 | Middlesborough
15 | 11009 | Newcastle
16 | 11013 | Nottingham
17 | 11002 | Oxford
18 | 11007 | Reading
19 | 11014 | Sheffield
20 | 10003 | Stockport (pilot)
21 | 11006 | Stoke
22 | 11022 | Swansea
23 | 11023 | Wrexham
24 | 11025 | Cheadle (imaging)

### Data-Coding 100295

comprises 9 Integer-valued members in a simple list.

# | Code | Meaning
--- | --- | ---
1 | 1 | In paid employment or self-employed
2 | 2 | Retired
3 | 3 | Looking after home and/or family
4 | 4 | Unable to work because of sickness or disability
5 | 5 | Unemployed
6 | 6 | Doing unpaid or voluntary work
7 | 7 | Full or part-time student
8 | -7 | None of the above
9 | -3 | Prefer not to answer

### Data-Coding 1001

comprises 22 Integer-valued members in a hierarchical tree.

# | Code | Meaning
--- | --- | ---
1 | 4001 | Caribbean
2 | 3001 | Indian
3 | 1 | White
4 | 2001 | White and Black Caribbean
5 | 1001 | British
6 | 3002 | Pakistani
7 | 2 | Mixed
8 | 4002 | African
9 | 1002 | Irish
10 | 2002 | White and Black African
11 | 3003 | Bangladeshi
12 | 3 | Asian or Asian British
13 | 4003 | Any other Black background
14 | 1003 | Any other white background
15 | 2003 | White and Asian
16 | 3004 | Any other Asian background
17 | 4 | Black or Black British
18 | 2004 | Any other mixed background
19 | 5 | Chinese
20 | 6 | Other ethnic group
21 | -1 | Do not know
22 | -3 | Prefer not to answer

END