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. Author manuscript; available in PMC: 2018 Dec 28.
Published in final edited form as: Ann Epidemiol. 2018 Jul 3;28(9):619–624.e1. doi: 10.1016/j.annepidem.2018.06.010

Table 1.

Participant characteristics by mother’s smoking status during pregnancy [percent (95% CI) or mean (±SD)]

Participant characteristics Maternal smoking status during pregnancy
Non-smoker Smoker
Male offspring (%) 51.1 (47.3, 50.6) 48.9 (45.3, 54.5)
Offspring Race/ethnicity (%)
    HISPANIC* 21.2 (18.7, 23.7) 8.6 (6.0,11.2)
    Non-Hispanic black 14.6 (12.9, 16.4) 11.5 (9.2, 13.8)
    Non-Hispanic white* 56.4 (53.2, 59.6) 74.8 (71.0, 78.5)
    Other 7.7 (6.4, 9.1) 5.1 (3.2, 6.9)
Household smoking (%)* 11.7 (10.2, 13.1) 52.5 (47.3, 57.7)
Offspring cotinine (ng/mL) 0.05 ± 1.06 0.52 ± 1.23
Offspring birth weight (grams)* 3401 ± 15 3303 ± 38
Offspring age (y) 13.5 ± 0.02 13.5 ± 0.05
Maternal age at birth (y)* 27.1 ± 0.16 25.6 ± 0.29
PIR (0–5) 2.69 ± 0.05 2.17 ± 0.07

PIR = Poverty Income Ratio; SD = standard deviation.

*

P ≤.05 for differences within component between maternal smoking status during pregnancy. The bold simply emphasized that these variables had significant differences.