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PGMSMKCIGNOP
Cigarettes per day mother smoked during pregnancy

Codes and Frequencies



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

00NoneXX
015 or lessXX
026 to 10XX
0311 to 15XX
0416 to 20XX
0521 to 30XX
0631 to 39XX
0740 or moreXX
96NIUXX
98Unknown-not ascertained·X
99Unknown-don't knowXX