Data
266,989 items of data are available, covering 226,509 participants.
Defined-instances run from 0 to 3, labelled using Instancing
2.
| Maximum | 4952 |
| Decile 9 | 83 |
| Decile 8 | 79 |
| Decile 7 | 76 |
| Decile 6 | 73 |
| Median | 70 |
| Decile 4 | 67 |
| Decile 3 | 62 |
| Decile 2 | 56 |
| Decile 1 | 47 |
| Minimum | -4813 |
|
|
- There are 633 distinct values.
- Mean = 68.3828
- Std.dev = 39.8928
- 127 items below graph minimum of 0
- 614 items above graph maximum of 119
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
170,629 participants, 170,629 items
| Maximum | 1248 |
| Decile 9 | 83 |
| Decile 8 | 79 |
| Decile 7 | 76 |
| Decile 6 | 73 |
| Median | 70 |
| Decile 4 | 66 |
| Decile 3 | 61 |
| Decile 2 | 55 |
| Decile 1 | 46 |
| Minimum | -4813 |
|
|
- There are 508 distinct values.
- Mean = 67.726
- Std.dev = 32.1769
- 83 items below graph minimum of 0
- 422 items above graph maximum of 120
|
Instance 1 : First repeat assessment visit (2012-13)
20,222 participants, 20,222 items
| Maximum | 1121 |
| Decile 9 | 83 |
| Decile 8 | 80 |
| Decile 7 | 78 |
| Decile 6 | 75 |
| Median | 73 |
| Decile 4 | 70 |
| Decile 3 | 67 |
| Decile 2 | 63 |
| Decile 1 | 55 |
| Minimum | -136 |
|
|
- There are 136 distinct values.
- Mean = 71.8291
- Std.dev = 29.2217
- 3 items below graph minimum of 0
- 43 items above graph maximum of 111
|
Instance 2 : Imaging visit (2014+)
69,477 participants, 69,477 items
| Maximum | 4952 |
| Decile 9 | 83 |
| Decile 8 | 79 |
| Decile 7 | 76 |
| Decile 6 | 73 |
| Median | 70 |
| Decile 4 | 67 |
| Decile 3 | 63 |
| Decile 2 | 57 |
| Decile 1 | 48 |
| Minimum | -775 |
|
|
- There are 269 distinct values.
- Mean = 68.9147
- Std.dev = 56.8671
- 39 items below graph minimum of 0
- 137 items above graph maximum of 118
|
Instance 3 : First repeat imaging visit (2019+)
6,661 participants, 6,661 items
| Maximum | 1237 |
| Decile 9 | 83 |
| Decile 8 | 79 |
| Decile 7 | 77 |
| Decile 6 | 74 |
| Median | 71 |
| Decile 4 | 68 |
| Decile 3 | 63 |
| Decile 2 | 58 |
| Decile 1 | 49 |
| Minimum | -439 |
|
|
- There are 96 distinct values.
- Mean = 69.1977
- Std.dev = 29.8843
- 2 items below graph minimum of 0
- 11 items above graph maximum of 117
|
Notes
reflection index is a measure of reflection
A digital volume pulse can be considered to be the summation of a direct and a reflected component. The direct component is due to transmission of a pressure wave from the left ventricle to the finger via the most direct route. The reflected component is formed by pressure transmitted from the heart to the lower body where it is reflected back up the aorta and thence to the finger. if 'b' is the height of direct wave peak and 'a' is the height of reflected wave peak the reflected index = (a/b) * 100%
