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3,475 items of data are available, covering 3,475 participants. Some values have special meanings defined by Data-Coding 819.
There are 2559 distinct values.
Mean = 2008-11-28
18 items below graph minimum of 1980-02-01
1 items have value 1903-03-03 (Code has event date after participant's date of birth and falls in the same calendar year as date of birth)
Counts of participants/items last updated 05 Mar 2020.
Date of the first occurrence of any code mapped to 3-character ICD10 M46. The code corresponds to "other inflammatory spondylopathies". Note that events which were apparently before birth were omitted when constructing this data field.