TABLE 2

Characteristics of the Study Population According to Parental Smoking Status

Nonsmoking Mother and Nonsmoking FatherSmoking Mother and Nonsmoking FatherNonsmoking Mother and Smoking FatherOthersa
n%n%n%N%
Maternal age
 <2532986.755411.613489.6262015.5
 25–3438 46578.4342371.710 53475.212 19471.9
 35+730914.979916.7212215.2213712.6
Parity
 022 42945.7196141.1634245.3885152.2
 118 78238.3185738.9537738.4554132.7
 2+783716.095420.0227116.2254615.0
 Missing240.040.1140.1130.1
Alcohol intake
 026 77554.6257653.9789256.4958656.6
 115 48531.6134328.1416529.7473828.0
 2+681213.985617.9194613.9262715.5
 Missing00.010.010.000.0
Maternal socioeconomic status
 High29 06959.2171836.0704150.3698541.2
 Middle16 77834.2229348.0558639.9735643.4
 Low31486.475315.813419.6255215.1
 Missing770.2120.3360.3580.3
Paternal socioeconomic status
 High25 70052.4162234.0568340.6599035.3
 Middle17 62735.9210344.0568240.6720042.5
 Low43368.887018.2217815.6311418.4
 Missing14092.91813.84613.36473.8
Maternal psychopathology
 No48 25098.3460796.513 70897.916 29996.2
 Yes8221.71693.52962.16523.8
Paternal psychopathology
 No48 40498.6465097.413 54796.716 18495.5
 Yes4640.9731.53452.55673.3
 Missing2040.4531.11120.82001.2
Gender of child
 Female23 89448.7230948.3680348.6830049.0
 Male25 17851.3246751.7720151.4865151.0
  • a Including smoking mother and smoking father, nicotine replacement use mother and smoking father, smoking quit mother and smoking father, nicotine replacement use mother and nonsmoking father, and smoking quit mother and nonsmoking father.