Data
3,951,367 items of data are available, covering 223,830 participants.
Some values have special meanings defined by Data-Coding
7667.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Array indices run from 1 to 15.
Maximum | 8 |
Decile 9 | -3 |
Decile 8 | -4.28571 |
Decile 7 | -5 |
Decile 6 | -6 |
Median | -6 |
Decile 4 | -7 |
Decile 3 | -7.2 |
Decile 2 | -8 |
Decile 1 | -8.857 |
Minimum | -12 |
|
|
- Mean = -5.9708
- Std.dev = 2.55573
- 22732 items above graph maximum of 2.857
- 1850664 items have value -99999 (Not computed)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
166,120 participants, 1,306,449 items
Maximum | 8 |
Decile 9 | -4 |
Decile 8 | -5 |
Decile 7 | -6 |
Decile 6 | -6 |
Median | -6.8 |
Decile 4 | -7 |
Decile 3 | -7.667 |
Decile 2 | -8 |
Decile 1 | -9 |
Minimum | -12 |
|
|
- Mean = -6.43831
- Std.dev = 2.37968
- 15062 items above graph maximum of 1
- 1152831 items have value -99999 (Not computed)
|
Instance 1 : First repeat assessment visit (2012-13)
19,971 participants, 158,803 items
Maximum | 8 |
Decile 9 | -4 |
Decile 8 | -5 |
Decile 7 | -6 |
Decile 6 | -6.333 |
Median | -7 |
Decile 4 | -7.143 |
Decile 3 | -8 |
Decile 2 | -8.333 |
Decile 1 | -9 |
Minimum | -12 |
|
|
- Mean = -6.61751
- Std.dev = 2.29282
- 1629 items above graph maximum of 1
- 139432 items have value -99999 (Not computed)
|
Instance 2 : Imaging visit (2014+)
73,176 participants, 580,955 items
Maximum | 8 |
Decile 9 | -2 |
Decile 8 | -3 |
Decile 7 | -4 |
Decile 6 | -4.66667 |
Median | -5 |
Decile 4 | -5.71429 |
Decile 3 | -6 |
Decile 2 | -7 |
Decile 1 | -8 |
Minimum | -12 |
|
|
- Mean = -4.86429
- Std.dev = 2.6237
- 8082 items above graph maximum of 4
- 510553 items have value -99999 (Not computed)
|
Instance 3 : First repeat imaging visit (2019+)
6,857 participants, 54,496 items
Maximum | 8 |
Decile 9 | -2 |
Decile 8 | -3 |
Decile 7 | -4 |
Decile 6 | -4.33333 |
Median | -5 |
Decile 4 | -5.42857 |
Decile 3 | -6 |
Decile 2 | -6.66667 |
Decile 1 | -7.33333 |
Minimum | -12 |
|
|
- Mean = -4.67426
- Std.dev = 2.47628
- 669 items above graph maximum of 3.33333
- 47848 items have value -99999 (Not computed)
|
Notes
This is the mean signal-to-noise ratio for rounds 8 onwards (right ear). The triplets played in rounds 1-5 represent the 'hunting phase' where the SNR change is 2 levels (equivalent to 4 dB) harder following a correct response and 2 levels easier following a wrong response, as opposed to a change of 1 level (2 dB) in rounds 8 to 15. Value is stored as -99999 for rounds 1-7.
Coding 7667 defines 1 special value:
- -99999 represents "Not computed"