Data
537,686 items of data are available, covering 497,726 participants, encoded using Data-Coding
1180.
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
497,396 participants, 497,396 items
Instance 1 : First repeat assessment visit (2012-13)
20,323 participants, 20,323 items
Instance 2 : Imaging visit (2014+)
19,967 participants, 19,967 items
Notes
United States Geological Survey classification of CaCO3 concentration into four groups: soft water (0-60 mg/L), moderately hard water (60-120 mg/L), hard water (120-180 mg/L) and very hard water (> 180 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
There are no matching Resources