Table 2.

Bivariate Relation Between Smoking During Pregnancy, Sociodemographic and Lifestyle Factors, and Hospitalization of the Child During the First Eight Months of Life, Aarhus, Denmark, 1991–1992

nHospitalizednHospitalized (%)
Smoking during pregnancy (cigarettes/d)
 013901047
 1–14484398
 15+1001515
 Missing0
Parity
 Primiparous1075696
 Multiparous8998910
 Missing0
Age (y)
 15–24372267
 25–29847668
 30–50755669
 Missing0
Marital status
 Cohabiting18761418
 Single891517
 Missing9222
Years of education
 <10518449
 10+953707
 Missing503449
Working status during pregnancy
 Working922667
 Unemployed354339
 Student14096
 Missing558509
Caffeine intake during pregnancy (mg/d)
 <400902617
 400+595569
 Missing477419
Alcohol intake during pregnancy (units/wk)
 0–216961358
 3+2052110
 Missing7323
Breastfeeding (mo)
 0325227
 <4403389
 4+1246988
 Missing0
Mother working 8 mo after delivery
 Yes13071068
 No617518
 Missing4912
Child in daycare at 8 mo
 Yes772689
 No1149878
 Missing5336
Smoking 8 mo after delivery
 01282937
 1–144024010
 15+256249
 Missing3313