: Data-Field 41283

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Data

18,579 items of data are available, covering 10,699 participants.
Array indices run from 0 to 15.

Maximum	1988-12-29
Decile 9	1988-04-05
Decile 8	1987-07-21
Decile 7	1986-11-03
Decile 6	1986-02-12
Median	1985-05-07
Decile 4	1984-07-22
Decile 3	1983-09-29
Decile 2	1982-12-04
Decile 1	1981-11-02
Minimum	1980-12-12

There are 2700 distinct values.
Mean = 1985-03-19

Notes

This field provides, for each participant, the dates when each of the procedures in Field 41273 was first recorded in the participant's hospital inpatient records (in either the main or a secondary position). The date can be linked to Field 41273 by using the array structure.

Please note that we have opted to populate this data-field with the episode start date (EPISTART in the HESIN table) or, if that was missing, the admission start date (ADMIDATE in the HESIN table) rather than use the operation date (OPDATE in the HESIN_OPER table). The rationale for this was:

around 1 in 5 primary procedures lacked a corresponding value for OPDATE in HESIN_OPER;

some recorded OPDATEs were inconsistent with the other date fields such as EPISTART, ADMIDATE, EPIEND and DISDATE (most likely due to data entry errors);

for those episodes with a value for OPDATE recorded the majority were the same as the value of EPISTART, with around 99% of OPDATE values within 7 days of the value of EPISTART;

values of EPISTART/ADMIDATE are more complete and thus may provide greater consistency across data providers.

See the Operations tab of the Hospital Inpatient Data Dictionary (Resource 141140) for further information about these fields.

Please note OPCS-3 coded hospital inpatient data are only available for older Scottish hospital records.

1 Related Data-Field

Field ID	Description	Relationship
41273	Operative procedures - OPCS3	Current Field is the date of the first occurrence of Field 41273

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