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136,258 items of data are available, covering 132,092 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
116,250 participants, 116,250 items
Instance 1 : First repeat assessment visit (2012-13)
20,008 participants, 20,008 items
Indicates whether it was possible to perform refractometry on left eye.
1 Related Data-Field
|5189||Refractometry method (right)||Current Field is the opposite-side complement to Field 5189|
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