: Data-Field 20116

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Data

614,426 items of data are available, covering 501,306 participants, encoded using Data-Coding 90.
Defined-instances run from 0 to 3, labelled using Instancing 2.

Graph illustrating main data

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,274 participants, 501,274 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 20,328 items
Graph illustrating main data

Instance 2 : Imaging visit (2014+)
84,020 participants, 84,020 items
Graph illustrating main data

Instance 3 : First repeat imaging visit (2019+)
8,804 participants, 8,804 items
Graph illustrating main data

Notes

This field summarises the current/past smoking status of the participant.

2 Related Data-Fields

Field ID	Description	Relationship
1239	Current tobacco smoking	Current Field is partially derived from Field 1239
1249	Past tobacco smoking	Current Field is partially derived from Field 1249

1 Resource

Preview	Name	Res ID
	Touchscreen questionnaire ordering, validation and dependencies	113241

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