Data
391,556 items of data are available, covering 132,973 participants.
Defined-instances run from 0 to 1, labelled using Instancing
2.
Array indices run from 0 to 15.
Average length is 5.0 characters, longest is 5.
2 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
116,997 participants, 333,098 items
Too few values for statistical summary.
Instance 1 : First repeat assessment visit (2012-13)
20,193 participants, 58,458 items
Too few values for statistical summary.
Notes
Visual acuity (left), letter-by-letter result for round
Value is 1 for correct letter, 0 for error. Ordering is same as Field 5081.
2 Related Data-Fields
Field ID | Description | Relationship |
5081 | Displayed letters in round (left) | Current Field indicates which letters the participant correctly identified from Field 5081 |
5083 | Visual acuity result in round (right) | Current Field is the opposite-side complement to Field 5083 |