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136,263 items of data are available, covering 132,098 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
116,263 participants, 116,263 items
Instance 1 : First repeat assessment visit (2012-13)
20,000 participants, 20,000 items
Indicates whether it was possible to perform refractometry on right eye.
1 Related Data-Field
|5191||Refractometry method (left)||Field 5191 is the opposite-side complement to Current Field|
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