| Description: | Weekly usage of mobile phone in last 3 months |
| Category: | Assessment centre ⏵ Touchscreen ⏵ Lifestyle and environment ⏵ Electronic device use |
| Lifestyle |
| Participants | 433,828 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Jan 2012 | |||
| Item count | 555,383 | Item Type | Data | Instances | Defined (4) | Version | Aug 2025 | |||
| Stability | Complete | Strata | Primary | Array | No | Cost Tier | o1 s1 |
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Instance 1 : First repeat assessment visit (2012-13)
17,548 participants, 17,548 items
Instance 2 : Imaging visit (2014+)
94,963 participants, 94,963 items
Instance 3 : First repeat imaging visit (2019+)
20,032 participants, 20,032 items
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
| Field ID | Description | Relationship |
|---|---|---|
| 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 |
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