: Data-Field 1787

Data-Field 1787

Description:	Maternal smoking around birth
Category:	Assessment centre ⏵ Touchscreen ⏵ Early life factors
	Early life + Early life and reproductive factors

Participants

493,936

Categorical (single)

Both sexes

Jan 2012

525,451

Data

Defined (3)

Jan 2024

Complete

Primary

d1 o1 s1

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Data

525,451 items of data are available, covering 493,936 participants, encoded using Data-Coding 100349.
Defined-instances run from 0 to 2, labelled using Instancing 2.

Graph illustrating main data

3 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
493,912 participants, 493,912 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
20,062 participants, 20,062 items
Graph illustrating main data

Instance 2 : Imaging visit (2014+)
11,477 participants, 11,477 items
Graph illustrating main data

Notes

ACE touchscreen question "Did your mother smoke regularly around the time when you were born?"

Field 1787 was collected from all participants except those who indicated they were adopted as a child, as defined by their answers to Field 1767

This question was dropped from the touchscreen protocol on 24/10/2016.

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