Data
1,054,032 items of data are available, covering 402,510 participants, encoded using Data-Coding
5.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Array indices run from 0 to 31.
Notes
Code for operation. If the participant was uncertain of the type of operation they had undergone, then they described it to the interviewer (a trained nurse) who attempted to place it within the coding tree. If the operation could not be located in the coding tree then the interviewer entered a free-text description of it. These free-text descriptions were subsequently examined by a doctor and, where possible, matched to entries in the coding tree. Free-text descriptions which could not be matched with very high probability have been marked as "unclassifiable".
5 Related Data-Fields
Field ID | Description | Relationship |
20011 | Interpolated Age of participant when ... | Field 20011 indicates the participant age for the operation in Current Field |
20010 | Interpolated Year when operation too ... | Field 20010 indicates the year of the operation in Current Field |
20014 | Method of recording time when operat ... | Field 20014 indicates if date or age was recorded for Current Field |
136 | Number of operations, self-reported | Field 136 is a count of the number of items for Current Field |
92 | Operation year/age first occurred | Field 92 indicates the occasion of the operation in Current Field |