TABLE 1

Relationships Between Prenatal and Child Factors and Availability of Alcohol Consumption Data at 32 Weeks

Data Available (n = 8240)Not Asked (n = 3460)Missing Data (n = 930)χ2 (2 df)P
Prenatal factors
    Maternal age ≥ 35 y, %1111619.64<.001
    Any smoking, %19a1935150.85<.001
    Cannabis use, %22528.70<.001
    Illicit drug use, %0.40.50.93.60.166
    Parity ≥ 1, %5654595.92.052
    Highest maternal education, O level or above, %71713627.57<.001
    Own home, %767547298.55<.001
    Currently married, %777856169.06<.001
    Maternal depression, %13152149.18<.001
     ≥4 drinks at 14–18 wk gestation, %16182324.54<.001
Child factors
    Gestational age ≤ 36 wk, %451048.28<.001
    Nonwhite ethnicity, %4553.28.194
    Male gender, %5152530.77.679
    Birth weight, mean (SD), kg3.44 (0.52)3.42 (0.54)3.28 (0.62)b<.001
  • a Daily frequency of smoking during pregnancy by mothers who provided alcohol consumption data at 32 weeks' gestation: 81.4% none, 3.6% 1–4, 4.7% 5–9, 4.4% 10–14, 2.7% 15–19, 2.1% 20–24, 0.5% 25–29, and 0.2% ≥30 times (data missing in 0.3%).

  • b F statistic, F = 35.81.