Data
15,003 items of data are available, covering 15,003 participants.
Some values have special meanings defined by Data-Coding 
819.
| Maximum | 2023-03-31 |  
| Decile 9 | 2021-07-22 |  
| Decile 8 | 2019-06-19 |  
| Decile 7 | 2017-04-20 |  
| Decile 6 | 2015-01-27 |  
| Median | 2012-10-07 |  
| Decile 4 | 2010-05-04 |  
| Decile 3 | 2007-06-18 |  
| Decile 2 | 2004-03-04 |  
| Decile 1 | 1998-10-26 |  
| Minimum | 1950-01-01 |  
 
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- There are 7220 distinct values.
 
- Mean = 2010-11-13
 
- 214 items below graph minimum of 1976-01-30
 
- 2 items have value 1902-02-02 (Code has event date matching participant's date of birth)
 
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Notes
Date of the first occurrence of any code mapped to 3-character ICD10 H53. The code corresponds to "visual disturbances". Note that events which were apparently before birth were omitted when constructing this data field.
Coding 819 defines 6 special values:
- 1900-01-01 represents "Code has no event date"
 
- 1901-01-01 represents "Code has event date before participant's date of birth"
 
- 1902-02-02 represents "Code has event date matching participant's date of birth"
 
- 1903-03-03 represents "Code has event date after participant's date of birth and falls in the same calendar year as date of birth"
 
- 1909-09-09 represents "Code has event date in the future and is presumed to be a place-holder or other system default"
 
- 2037-07-07 represents "Code has event date in the future and is presumed to be a place-holder or other system default"
 
 
1 Related Data-Field
| Field ID | Description | Relationship | 
| 131211 | Source of report of H53 (visual dist ... | Field 131211 indicates the source of the outcome first reported in Current Field. | 
 
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