WARNING: the interactive features of this website use CSS3, which your browser does not support. To use the full features of this website, please update your browser.
774,932 items of data are available, covering 502,495 participants. Some values have special meanings defined by Data-Coding 1313. Array indices run from 0 to 14.
There are 11903 distinct values.
Mean = 2000-10-19
7399 items below graph minimum of 1964-03-31
2390 items have value 1904-04-04 (Date in or before calendar year of birth)
Counts of participants/items last updated 13 Mar 2020.
This the date at which a participant is first recorded (according to the record sources available to UK Biobank) at the location given in Field 22702 and Field 22704 (or the more precise, but restricted, Field 22701 and Field 22703).
Note that, when data is supplied to approved researchers, the array index of dates will not necessarily be in the same order as the dates themselves as UK Biobank does not itself receive location data in chronological order.