Data
80,692 items of data are available, covering 80,692 participants.
Defined-instances run from 0 to 1, labelled using Instancing 
2.
Units of measurement are micrometres.
| 
| Maximum | 201.67 |  | Decile 9 | 36.47 |  | Decile 8 | 34.88 |  | Decile 7 | 33.94 |  | Decile 6 | 33.22 |  | Median | 32.55 |  | Decile 4 | 31.91 |  | Decile 3 | 31.24 |  | Decile 2 | 30.47 |  | Decile 1 | 29.39 |  | Minimum | 0 |  |   | 
Mean = 32.813Std.dev = 5.375391142 items below graph minimum of 22.311786 items above graph maximum of 43.55 | 
2 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
65,875 participants, 65,875 items
| 
| Maximum | 169.08 |  | Decile 9 | 35.92 |  | Decile 8 | 34.62 |  | Decile 7 | 33.77 |  | Decile 6 | 33.09 |  | Median | 32.46 |  | Decile 4 | 31.85 |  | Decile 3 | 31.2 |  | Decile 2 | 30.45 |  | Decile 1 | 29.42 |  | Minimum | 0 |  |   | 
Mean = 32.5326Std.dev = 4.30964665 items below graph minimum of 22.92727 items above graph maximum of 42.42 | 
Instance 1 : First repeat assessment visit (2012-13)
14,817 participants, 14,817 items
| 
| Maximum | 201.67 |  | Decile 9 | 41.73 |  | Decile 8 | 36.85 |  | Decile 7 | 35.075 |  | Decile 6 | 33.95 |  | Median | 33.075 |  | Decile 4 | 32.29 |  | Decile 3 | 31.48 |  | Decile 2 | 30.53 |  | Decile 1 | 29.2 |  | Minimum | 0 |  |   | 
Mean = 34.0594Std.dev = 8.53709405 items below graph minimum of 16.67326 items above graph maximum of 54.26 | 
Notes
Average inner nuclear layer (INL) thickness across all subfields in the right eye. The publication detailing the methods can be found in 
Publication 1876. Image source for measurements can be found in 
Category 100016. Please be aware that these are the raw values generated by the Topcon Advanced Boundary Segmentation [TABS] software and should be quality controlled using the fields in 
Category 100116. Please note that these fields have been derived separately from those in 
Category 1081. Those wishing to utilise fields across both categories should proceed with additional caution.
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