Data
537,475 items of data are available, covering 497,527 participants, encoded using Data-Coding
1181.
Defined-instances run from 0 to 2, labelled using Instancing
2.
3 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,197 participants, 497,197 items
Instance 1 : First repeat assessment visit (2012-13)
20,317 participants, 20,317 items
Instance 2 : Imaging visit (2014+)
19,961 participants, 19,961 items
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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