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34,915 items of data are available, covering 11,384 participants, encoded using Data-Coding 49. Defined-instances run from 0 to 0, labelled using Instancing 2. Array indices run from 0 to 6.
Against participant wishes7590
Lack of time6
Reason not known134
Other health reason187
Reason not stated9
Poor venous access/flow24937
Recently donated blood14
Notes relating to blood sample #, particularly why it was not collected.
This field was created by post-hoc coding the free-text reasons entered during the assessment centre visit. The encoding used was constructed after the data had been examined to determine suitable representative groupings.