: Data-Field 4270

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Data

305,421 items of data are available, covering 240,260 participants, encoded using Data-Coding 15.
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
166,118 participants, 166,118 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
20,003 participants, 20,003 items
Graph illustrating main data

Instance 2 : Imaging visit (2014+)
98,743 participants, 98,743 items
Graph illustrating main data

Instance 3 : First repeat imaging visit (2019+)
20,557 participants, 20,557 items
Graph illustrating main data

Notes

Volume level set by participant for left ear as a percentage of the maximum volume. Note that these value do not have some absolute correspondence to a dB scale as the maximum volume could vary between pieces of equipment and the choice might have been influenced by the level of background noise in the touchscreen area.

1 Related Data-Field

Field ID	Description	Relationship
4277	Volume level set by participant (right)	Current Field is the opposite-side complement to Field 4277

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