Mainstage Variables search
Find the variables you need for your research by searching by variable name, by data file or by index term. Explore How to use the Variable Search. Our Main Survey User Guide and list of key variables for the analysis of individual response data may also help you.
| Variable | Label | Datafile | Waves |
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| auditc1fh | Drinking during pregnancy |
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| auditc2fh | Alcohol drinking: more or less |
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| auditc3fh | Alcohol frequency past 12 months |
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| auditc4fh | Drinks on typical day |
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| auditc5fh | Six or more drinks frequency |
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| brfedend2fh | Age breastfeeding stopped: unit |
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| brfedendfh | Age breastfeeding stopped |
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| brfedfh | Breastfeed |
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| bwtelfh | Child born early or late |
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| bwtfh | Birthweight |
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| bwtg5fh | Birthweight: more than 5.5lbs (2.5kg) |
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| bwtkfh | Birthweight kilograms |
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| bwtlbfh | Birthweight in pounds |
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| bwtozfh | Birthweight in ounces |
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| bwtwkfh | Weeks early or late |
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| bwtxpfh | Child born when expected |
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| childno | Child number |
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| hhorig | Sample origin, household |
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| hidp | Household identifier (public release) |
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| lbchhgmis | Child's other parent lives in household |
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| lchalfh | Child age last lived with resp |
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| lchchkfh | Date of birth check - resident biological child |
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lchdobm
Special Licence |
month of birth of non-resident biological child |
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| lchdobmfh | Child's DOB month |
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| lchdoby | year of birth of non-resident biological child |
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| lchdobyrfh | Child's DOB year |
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| lchdodmfh | Child's DOD month |
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| lchdodyrfh | Child's DOD year |
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| lchlvfh | Child resident - biological |
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| lchnofh | PNO of resident biological child |
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| lchsxfh | Sex of non-resident, deceased or stillborn biological child, or biological resid |
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| lchyd4fh | Year biological child died |
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