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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| bwtpn3 | Child 3 PNO |
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| bwtpn4 | Child 4 PNO |
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| bwtwk | Weeks early or late |
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| bwtwk1 | Child 1 Weeks early or late |
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| bwtwk2 | Child 2 Weeks early or late |
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| bwtwk3 | Child 3 Weeks early or late |
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| bwtwk4 | Child 4 Weeks early or late |
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| bwtwk_bh | Weeks early or late (BHPS) |
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| bwtwkfh | Weeks early or late |
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| bwtwkfh1 | natchild no. 1: Weeks early or late |
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| bwtwkfh2 | natchild no. 2: Weeks early or late |
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| bwtwkfh3 | natchild no. 3: Weeks early or late |
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| bwtwkfh4 | natchild no. 4: Weeks early or late |
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| bwtwkfh5 | natchild no. 5: Weeks early or late |
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| bwtwkfh6 | natchild no. 6: Weeks early or late |
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| bwtwkfh7 | natchild no. 7: Weeks early or late |
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| bwtwkfh8 | natchild no. 8: Weeks early or late |
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| bwtwkfh9 | natchild no. 9: Weeks early or late |
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| bwtxp | Child born when expected |
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| bwtxp1 | Child 1 Born when expected |
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| bwtxp2 | Child 2 Born when expected |
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| bwtxp3 | Child 3 Born when expected |
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| bwtxp4 | Child 4 Born when expected |
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| bwtxp_bh | Born when expected (BHPS) |
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| bwtxpfh | Child born when expected |
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| bwtxpfh1 | natchild no. 1: Child born when expected |
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| bwtxpfh2 | natchild no. 2: Child born when expected |
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| bwtxpfh3 | natchild no. 3: Child born when expected |
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| bwtxpfh4 | natchild no. 4: Child born when expected |
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| bwtxpfh5 | natchild no. 5: Child born when expected |
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| bwtxpfh6 | natchild no. 6: Child born when expected |
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| bwtxpfh7 | natchild no. 7: Child born when expected |
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