: Data-Field 131884

Data-Field 131884

Description:	Date M23 first reported (internal derangement of knee)
Category:	Health-related outcomes ⏵ First occurrences ⏵ Musculoskeletal system and connective tissue disorders

Participants

23,853

Date

Both sexes

Jul 2019

23,853

Data

Singular

Sep 2023

Ongoing

Derived

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Data

23,853 items of data are available, covering 23,853 participants.
Some values have special meanings defined by Data-Coding 819.

Maximum	2022-10-25
Decile 9	2016-10-19
Decile 8	2014-09-02
Decile 7	2012-12-10
Decile 6	2011-05-11
Median	2009-10-22
Decile 4	2008-01-22
Decile 3	2005-11-23
Decile 2	2003-03-11
Decile 1	1999-11-17
Minimum	1952-01-01

There are 7371 distinct values.
Mean = 2008-11-27
131 items below graph minimum of 1982-12-16

Notes

Date of the first occurrence of any code mapped to 3-character ICD10 M23. The code corresponds to "internal derangement of knee". 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"

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