: Data-Field 2207

Data-Field 2207

Description:	Wears glasses or contact lenses
Category:	Assessment centre ⏵ Touchscreen ⏵ Health and medical history ⏵ Eyesight
	Health outcomes + Self-reported medical conditions

Participants

501,278

Categorical (single)

Both sexes

Jan 2012

614,398

Data

Defined (4)

Apr 2024

Complete

Primary

dX o1 s1

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Data

614,398 items of data are available, covering 501,278 participants, encoded using Data-Coding 100352.
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
501,246 participants, 501,246 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

ACE touchscreen question "Do you wear glasses or contact lenses to correct your vision?"

2 Related Data-Fields

Field ID	Description	Relationship
2217	Age started wearing glasses or conta ...	Field 2217 was collected from participants who indicated they wear glasses or contact lenses to correct their vision, as defined by their answers to Current Field
6147	Reason for glasses/contact lenses	Field 6147 was collected from participants who indicated they wear glasses or contact lenses to correct their vision, as defined by their answers to Current Field

2 Resources

Preview	Name	Res ID
	Screenshot from touchscreen questionnaire used to capture field 2207	100392
	Touchscreen questionnaire ordering, validation and dependencies	113241

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