573,378 items of data are available, covering 501,638 participants, encoded using Data-Coding 100335
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,621 participants, 501,621 items
Instance 1 : First repeat assessment visit (2012-13)
20,336 participants, 20,336 items
Instance 2 : Imaging visit (2014+)
48,340 participants, 48,340 items
Instance 3 : First repeat imaging visit (2019+)
3,081 participants, 3,081 items
ACE touchscreen question "For approximately how many years have you been using a mobile phone at least once per week to make or receive calls?"
If the participant activated the Help button they were shown the message:
|Do not include time spent text messaging.|
If you are unsure, please provide an estimate or select Do not know.
There are no tabulations involving field 1110.
Registered researchers may, when logged in, request that new analyses be generated and displayed here.