UKB : Data-Field 21003

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Data

575,618 items of data are available, covering 502,478 participants.
Defined-instances run from 0 to 3, labelled using Instancing 2.
Units of measurement are years.

Maximum	82
Decile 9	68
Decile 8	65
Decile 7	63
Decile 6	61
Median	59
Decile 4	56
Decile 3	53
Decile 2	49
Decile 1	45
Minimum	37

There are 46 distinct values.
Mean = 57.4097
Std.dev = 8.3742

Counts of participants/items last updated 30 Oct 2020.

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
502,478 participants, 502,478 items

Maximum	73
Decile 9	67
Decile 8	64
Decile 7	62
Decile 6	60
Median	58
Decile 4	55
Decile 3	52
Decile 2	48
Decile 1	44
Minimum	37

There are 37 distinct values.
Mean = 56.5288
Std.dev = 8.09524

Instance 1 : First repeat assessment visit (2012-13)
20,344 participants, 20,344 items

Maximum	79
Decile 9	70
Decile 8	68
Decile 7	66
Decile 6	65
Median	63
Decile 4	61
Decile 3	58
Decile 2	54
Decile 1	50
Minimum	43

There are 35 distinct values.
Mean = 61.4479
Std.dev = 7.3986

Instance 2 : Imaging visit (2014+)
48,999 participants, 48,999 items

Maximum	82
Decile 9	74
Decile 8	71
Decile 7	69
Decile 6	67
Median	65
Decile 4	62
Decile 3	60
Decile 2	57
Decile 1	53
Minimum	44

There are 39 distinct values.
Mean = 64.1951
Std.dev = 7.74697

Instance 3 : First repeat imaging visit (2019+)
3,797 participants, 3,797 items

Maximum	82
Decile 9	74
Decile 8	72
Decile 7	69
Decile 6	67
Median	65
Decile 4	63
Decile 3	60
Decile 2	57
Decile 1	55
Minimum	49

There are 34 distinct values.
Mean = 64.7767
Std.dev = 7.25045

Notes

This is a derived variable based on date of birth and date of attending assessment centre and refers to the age of the participant on the day they attended an Assessment Centre, truncated to whole year part.

5 Categories

Category ID	Description	Items
100024	Reception	16
100021	Recruitment	2+11
701	Socio-demographics	110
100000	UK Biobank Assessment Centre	+2145
1001	Primary demographics	8

3 Related Data-Fields

Field ID	Description	Relationship
21022	Age at recruitment	Field 21022 is a subset of Current Field
53	Date of attending assessment centre	Current Field uses the date-joined value in Field 53
33	Date of birth	Current Field uses the date-of-birth value in Field 33

0 Tabulations

There are 1 tabulations which are either under review or cannot be released.

Two-field tabulations
Tab ID	Field #2	Status
630	699	Length of time at current address (Household)	under review

Two-field tabulations

Tab ID

Field #2

Status

630

699

Length of time at current address (Household)

under review

Click the appropriate Tab ID for additional information.

Registered researchers may, when logged in, request that new analyses be generated and displayed here.

6 Resources

Preview	Name	Res ID
	Assessment centre grid co-ordinates	11002
	Reception - participant view	100128
	Reception - staff view	100129
	Reception procedures at assessment centres	100241
	Reception process at assessment centre	100104
	Reception process at imaging centre	2219

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