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136,276 items of data are available, covering 132,110 participants, encoded using Data-Coding 100274
Defined-instances run from 0 to 1, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
116,267 participants, 116,267 items
Instance 1 : First repeat assessment visit (2012-13)
20,009 participants, 20,009 items
Auto-refraction method (left)
1 Related Data-Fields
|5189||Auto-refraction method (right)||Current Field is the opposite-side complement to Field 5189|