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2,013 items of data are available, covering 2,013 participants, encoded using Data-Coding 47. Defined-instances run from 0 to 0, labelled using Instancing 2.
Against participant wishes197
Lack of time31
Other health reason196
Reason not known16
Other health reason2
Reason not stated24
Unable to understand instructions14
Previous measures unavailable6
Reason not known12
Retinal detachment/eye problems83
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Reason spirometry measurement was not performed (entered as free-text by a UK Biobank Staff member).
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.