Data
263,141 items of data are available, covering 221,458 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 |
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- There are 15 distinct values.
- Mean = 7.01487
- Std.dev = 1.21505
- 2815 items below graph minimum of 4
- 572 items above graph maximum of 10
- 337 items have value -3 (Prefer not to answer)
- 1639 items have value -2 (Only had twins)
- 3590 items have value -1 (Do not know)
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4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
221,386 participants, 221,386 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 |
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- There are 15 distinct values.
- Mean = 6.99925
- Std.dev = 1.21956
- 2429 items below graph minimum of 4
- 475 items above graph maximum of 10
- 296 items have value -3 (Prefer not to answer)
- 1363 items have value -2 (Only had twins)
- 3089 items have value -1 (Do not know)
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Instance 1 : First repeat assessment visit (2012-13)
8,262 participants, 8,262 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 |
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|
- There are 14 distinct values.
- Mean = 7.07394
- Std.dev = 1.17523
- 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)
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Instance 2 : Imaging visit (2014+)
30,696 participants, 30,696 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 |
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|
- There are 13 distinct values.
- Mean = 7.09999
- Std.dev = 1.19101
- 290 items below graph minimum of 4
- 76 items above graph maximum of 10
- 35 items have value -3 (Prefer not to answer)
- 215 items have value -2 (Only had twins)
- 393 items have value -1 (Do not know)
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Instance 3 : First repeat imaging visit (2019+)
2,797 participants, 2,797 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 |
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|
- There are 11 distinct values.
- Mean = 7.14004
- Std.dev = 1.18374
- 15 items below graph minimum of 3
- 2 items have value -3 (Prefer not to answer)
- 24 items have value -2 (Only had twins)
- 29 items have value -1 (Do not know)
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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.
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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 |