: Data-Field 2744

WARNING: the interactive features of this website use CSS3, which your browser does not support. To use the full features of this website, please update your browser.

Data

267,441 items of data are available, covering 221,386 participants.
Some values have special meanings defined by Data-Coding 100585.
Defined-instances run from 0 to 3, labelled using Instancing 2.
Units of measurement are pounds.

Maximum	16
Decile 9	8
Decile 8	8
Decile 7	8
Decile 6	7
Median	7
Decile 4	7
Decile 3	7
Decile 2	6
Decile 1	6
Minimum	2

There are 15 distinct values.
Mean = 7.01514
Std.dev = 1.21478
2853 items below graph minimum of 4
578 items above graph maximum of 10
342 items have value -3 (Prefer not to answer)
1666 items have value -2 (Only had twins)
3681 items have value -1 (Do not know)

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
221,307 participants, 221,307 items

Maximum	16
Decile 9	8
Decile 8	8
Decile 7	8
Decile 6	7
Median	7
Decile 4	7
Decile 3	7
Decile 2	6
Decile 1	6
Minimum	2

There are 15 distinct values.
Mean = 6.99916
Std.dev = 1.21953
2427 items below graph minimum of 4
475 items above graph maximum of 10
296 items have value -3 (Prefer not to answer)
1361 items have value -2 (Only had twins)
3089 items have value -1 (Do not know)

Instance 1 : First repeat assessment visit (2012-13)
8,260 participants, 8,260 items

Maximum	16
Decile 9	8
Decile 8	8
Decile 7	8
Decile 6	7
Median	7
Decile 4	7
Decile 3	7
Decile 2	6
Decile 1	6
Minimum	2

There are 14 distinct values.
Mean = 7.07396
Std.dev = 1.17538
70 items below graph minimum of 4
17 items above graph maximum of 10
4 items have value -3 (Prefer not to answer)
37 items have value -2 (Only had twins)
79 items have value -1 (Do not know)

Instance 2 : Imaging visit (2014+)
34,315 participants, 34,315 items

Maximum	14
Decile 9	8
Decile 8	8
Decile 7	8
Decile 6	7
Median	7
Decile 4	7
Decile 3	7
Decile 2	6
Decile 1	6
Minimum	2

There are 13 distinct values.
Mean = 7.09164
Std.dev = 1.19268
323 items below graph minimum of 4
82 items above graph maximum of 10
40 items have value -3 (Prefer not to answer)
238 items have value -2 (Only had twins)
472 items have value -1 (Do not know)

Instance 3 : First repeat imaging visit (2019+)
3,559 participants, 3,559 items

Maximum	12
Decile 9	9
Decile 8	8
Decile 7	8
Decile 6	7
Median	7
Decile 4	7
Decile 3	7
Decile 2	6
Decile 1	6
Minimum	2

There are 11 distinct values.
Mean = 7.13339
Std.dev = 1.18086
19 items below graph minimum of 3
2 items have value -3 (Prefer not to answer)
30 items have value -2 (Only had twins)
41 items have value -1 (Do not know)

Notes

ACE touchscreen question "What was the birth weight of your first child in pounds? (do not include twins)"

The following checks were performed:

If answer < 2 then rejected
If answer > 16 then rejected
If answer > 12 then participant asked to confirm

If the participant activated the Help button they were shown the message:

If you are unsure of the weight in pounds, here is a conversion table for pounds, grams and kilograms.

Pounds Grams Kilograms
2 907 0.91
3 1361 1.36
4 1814 1.81
5 2268 2.27
6 2721 2.72
7 3175 3.18
8 3629 3.63
9 4082 4.08
10 4536 4.54
11 4990 4.99
12 5443 5.44
13 5897 5.90
14 6350 6.35
15 6804 6.80

An exact answer is not necessary. Please enter the birthweight to the closest pound.
If your first birth was twins or other multiple birth, enter the birthweight of the first singleton birth.
If you have only had twins or other multiple births then select Only twins.

Field 2744 was collected from women who indicated they had given birth to at least one child, as defined by their answers to Field 2734

Coding 100585 defines 3 special values:

-1 represents "Do not know"
-2 represents "Only had twins"
-3 represents "Prefer not to answer"

1 Related Data-Field

Field ID	Description	Relationship
2734	Number of live births	Current Field was collected from women who indicated they had given birth to at least one child, as defined by their answers to Field 2734

2 Resources

Preview	Name	Res ID
	Screenshot from touchscreen questionnaire used to capture field 2744	100543
	Touchscreen questionnaire ordering, validation and dependencies	113241

Enabling scientific discoveries that improve human health