474,712 items of data are available, covering 427,817 participants, encoded using Data-Coding 100336
Defined-instances run from 0 to 2, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
423,354 participants, 423,354 items
Instance 1 : First repeat assessment visit (2012-13)
17,569 participants, 17,569 items
Instance 2 : Imaging visit (2014+)
33,789 participants, 33,789 items
ACE touchscreen question "Over the last 3 months, on average how much time per week did you spend making or receiving calls on a mobile phone?"
If the participant activated the Help button they were shown the message:
|If you are unsure, please provide an estimate or select Do not know.|
Field 1120 was collected from participants who indicated they have used a mobile phone at least once per week in the past or do not know whether they have used or not, as defined by their answers to Field 1110
2 Related Data-Fields
|1110||Length of mobile phone use||Current Field was collected from participants who indicated they have used a mobile phone at least once per week in the past or do not know whether they have used or not, as defined by their answers to ~F11|
|10749||Time using mobile phone in last 3 mo ...||Field 10749 is the pilot-study predecessor of main-study Current Field|
There are no tabulations involving field 1120.
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