Baseline characteristics of the cohort for the first live birth.
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Data are n (percent) unless otherwise specified. All pregnancy- and infant-related characteristics are for the first (index) live birth.*Maternally requested cesarean data available from 2002–2010 only (cohort n = 258,445).aSmoking data available 1997–2010 only (n = 405,498).bBMI data available 2003–2010 only (n = 230,066).cHistory of pregnancy loss before the first live birth.IQR, interquartile range; SD, standard deviation.
创建时间：
2015-12-02
