Active and passive maternal smoking during pregnancy and birth outcomes: the Kyushu Okinawa maternal and child health study.

BMC Pregnancy Childbirth · 2013 · PMC3750375 · PMID 23919433

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did not reach statistical significanceno p-value reported

Women who smoked in the second and/or third trimesters but who did not smoke throughout their pregnancy had a 1.9-fold increased risk of SGA (but this did not reach statistical significance).

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