Data
40,583 items of data are available, covering 39,680 participants.
Defined-instances run from 2 to 3, labelled using Instancing
2.
Units of measurement are percent.
| Maximum | 91 |
| Decile 9 | 63 |
| Decile 8 | 61 |
| Decile 7 | 59 |
| Decile 6 | 58 |
| Median | 56 |
| Decile 4 | 55 |
| Decile 3 | 53 |
| Decile 2 | 51 |
| Decile 1 | 48 |
| Minimum | 1 |
|
|
- There are 86 distinct values.
- Mean = 55.4313
- Std.dev = 6.79456
- 408 items below graph minimum of 33
- 9 items above graph maximum of 78
|
2 Instances
Instance 2 : Imaging visit (2014+)
39,600 participants, 39,600 items
| Maximum | 91 |
| Decile 9 | 63 |
| Decile 8 | 61 |
| Decile 7 | 59 |
| Decile 6 | 58 |
| Median | 56 |
| Decile 4 | 55 |
| Decile 3 | 53 |
| Decile 2 | 51 |
| Decile 1 | 48 |
| Minimum | 1 |
|
|
- There are 86 distinct values.
- Mean = 55.439
- Std.dev = 6.7846
- 393 items below graph minimum of 33
- 9 items above graph maximum of 78
|
Instance 3 : First repeat imaging visit (2019+)
983 participants, 983 items
| Maximum | 74 |
| Decile 9 | 63 |
| Decile 8 | 60 |
| Decile 7 | 59 |
| Decile 6 | 57 |
| Median | 56 |
| Decile 4 | 55 |
| Decile 3 | 53 |
| Decile 2 | 51 |
| Decile 1 | 48 |
| Minimum | 4 |
|
|
- There are 49 distinct values.
- Mean = 55.12
- Std.dev = 7.1773
- 15 items below graph minimum of 33
|
Notes
Left ventricular ejection fraction
Please be aware that the inline VF results are fully automated without any expert quality control. Caution is advised to use results without any visual quality control or linear bias correction as recommended in the following paper: Fully-automated left ventricular mass and volume MRI analysis in the UK Biobank population cohort: evaluation of initial results. Suinesiaputra, A. et al. Int J Cardiovasc Imaging. 2018 (https://dx.doi.org/10.1007%2Fs10554-017-1225-9). Expert research groups are performing CMR analysis with quality control and these will be available in the Returns Catalogue.
1 Related Data-Field
| Field ID | Description | Relationship |
|---|
| 20209 | Short axis heart images - DICOM | Current Field is derived from Field 20209 |
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