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131,260 items of data are available, covering 125,490 participants. Array indices run from 0 to 4.
Mean = 2014-12-18
Counts of participants/items last updated 17 Apr 2021.
Time when initial entry/pointer method mood questions were completed prior to completing elements of the cognitive questionnaire. Note that participants could complete the sections of the cognitive questionnaire over multiple sessions, so some participants have multiple values for this field which must be linked to the individual sections by examining their timestamps.