Data
237,347 items of data are available, covering 208,365 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 611 distinct values.
- Mean = 68.5697
- Std.dev = 41.3488
- 114 items below graph minimum of 0
- 571 items above graph maximum of 119
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
170,717 participants, 170,717 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 509 distinct values.
- Mean = 67.7275
- Std.dev = 32.184
- 83 items below graph minimum of 0
- 423 items above graph maximum of 120
|
Instance 1 : First repeat assessment visit (2012-13)
20,228 participants, 20,228 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 = 71.8295
- Std.dev = 29.218
- 3 items below graph minimum of 0
- 43 items above graph maximum of 111
|
Instance 2 : Imaging visit (2014+)
41,779 participants, 41,779 items
| Maximum | 4952 |
| Decile 9 | 83 |
| Decile 8 | 79 |
| Decile 7 | 77 |
| Decile 6 | 74 |
| Median | 71 |
| Decile 4 | 68 |
| Decile 3 | 64 |
| Decile 2 | 59 |
| Decile 1 | 49 |
| Minimum | -775 |
|
|
- There are 227 distinct values.
- Mean = 70.5082
- Std.dev = 70.4142
- 27 items below graph minimum of 0
- 98 items above graph maximum of 117
|
Instance 3 : First repeat imaging visit (2019+)
4,623 participants, 4,623 items
| Maximum | 1237 |
| 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 | 47 |
| Minimum | -439 |
|
|
- There are 90 distinct values.
- Mean = 67.886
- Std.dev = 29.6174
- 1 item below graph minimum of 0
- 6 items above graph maximum of 119
|
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%
