Study estimates use of cigarettes, e-cigarettes among women of reproductive age in the U.S.

Cigarette use was lower among pregnant women in the United States (8 percent) than among nonpregnant women (14.3 percent) but rates of e-cigarette use were almost identical (3.6 percent for pregnant women and 3.3 percent for nonpregnant women) in a study based on national health survey data.
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