Data
82,781 items of data are available, covering 82,781 participants.
Defined-instances run from 0 to 1, labelled using Instancing 
2.
| Maximum | 0.991959 |  
| Decile 9 | 0.9636 |  
| Decile 8 | 0.940705 |  
| Decile 7 | 0.907596 |  
| Decile 6 | 0.860042 |  
| Median | 0.788096 |  
| Decile 4 | 0.685425 |  
| Decile 3 | 0.525091 |  
| Decile 2 | 0.251176 |  
| Decile 1 | -0.140759 |  
| Minimum | -0.992693 |  
 
 | 
 
 | 
- Mean = 0.591118
 
- Std.dev = 0.452478
 
  | 
 
2 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
67,219 participants, 67,219 items
| Maximum | 0.991959 |  
| Decile 9 | 0.965437 |  
| Decile 8 | 0.944912 |  
| Decile 7 | 0.91609 |  
| Decile 6 | 0.874026 |  
| Median | 0.812246 |  
| Decile 4 | 0.71911 |  
| Decile 3 | 0.578105 |  
| Decile 2 | 0.329106 |  
| Decile 1 | -0.0924109 |  
| Minimum | -0.992693 |  
 
 | 
 
 | 
- Mean = 0.619571
 
- Std.dev = 0.437401
 
  | 
Instance 1 : First repeat assessment visit (2012-13)
15,562 participants, 15,562 items
| Maximum | 0.989776 |  
| Decile 9 | 0.949993 |  
| Decile 8 | 0.908665 |  
| Decile 7 | 0.848246 |  
| Decile 6 | 0.764898 |  
| Median | 0.652906 |  
| Decile 4 | 0.498295 |  
| Decile 3 | 0.262621 |  
| Decile 2 | 0 |  
| Decile 1 | -0.301205 |  
| Minimum | -0.986951 |  
 
 | 
 
 | 
- Mean = 0.468216
 
- Std.dev = 0.49405
 
  | 
 
Notes
This field should be used to quality control the values generated by the Topcon Advanced Boundary Segmentation [TABS] software in 
Category 100079. Information about how the research group who generated the values quality controlled them for their publication can be seen in 
Return 1875.
 
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