HR mothers were also more likely to use more than one substance than LR control mothers (χ2=14.62, p<.001). Among HR mothers who used at least one substance during pregnancy, 26.8% (n=22) used alcohol, cigarettes, and other drugs, while 24.4% (n=20) used both alcohol and cigarettes, 3.7% (n=3) used both alcohol and other drugs, and 3.7% (n=3) used both cigarettes and other drugs. Some mothers reported using only one substance, with 17.1% (n=14) using only alcohol, 22% (n=18) using cigarettes only, and 2% (n=2) using a single other drug during pregnancy. Among LR mothers who used at least one substance during pregnancy, 3% (n=1) used alcohol, cigarettes, and other drugs, 15.6% (n=5) used both alcohol and cigarettes, 50% (n=16) only drank alcohol, and 31.3% (n=10) only smoked cigarettes.
