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QTLENGTH2PSNO
Length off cigarettes after baby's birth, number (Pregnancy and Smoking Supplement)

Codes and Frequencies



An 'X' indicates the category is available for that sample

00NIUX
011X
022X
033X
044X
055X
066X
077X
088·
099·
1010X
1111·
1212X
1313·
1414·
1515X
1616·
1717·
1818·
1919·
2020X
2121·
2222·
2323·
2424·
2525X
98Unknown - not ascertainedX
99UnknownX