Table 1.

Demographic and smoking characteristics of mother-infant dyads

Characteristic% (n)Mean ± SD
Male infant50.1 (73)
Infant age (mo)6.6 ± 1.9
Mother age (y)25.7 ± 5.7
Ethnicity of mother
    White71.5 (103)
    Black13.2 (19)
    Asian2.1 (3)
    Hispanic2.1 (3)
    Other11.1 (16)
Education of mother
    High school or less55.2 (79)
    Vocational school12.6 (18)
    Some college28.0 (40)
    College degree4.2 (6)
Cigarettes/wk (mother)98.2 ± 58.9
Other smokers in household1.1 ± 1.0