: Data-Field 21101

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Data

537,216 items of data are available, covering 497,300 participants, encoded using Data-Coding 1181.
Defined-instances run from 0 to 2, labelled using Instancing 2.

Graph illustrating main data

3 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
496,970 participants, 496,970 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
20,303 participants, 20,303 items
Graph illustrating main data

Instance 2 : Imaging visit (2014+)
19,943 participants, 19,943 items
Graph illustrating main data

Notes

World Health Organization classification of CaCO3 concentration into two groups: soft water (< 200 mg/L), and hard water (> 200 mg/L).

1 Related Data-Field

Field ID	Description	Relationship
21102	Year of survey	Current Field measures are related to a survey year captured in Field 21102

0 Resources

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