TABLE 2.

Logistic Regression Model of Infant Sleep Position: Interacted Model

Prone Sleeping—AORs (95% Confidence Interval)Supine Sleep—AORs (95% Confidence Interval)
Race/ethnicity
 Non-Hispanic white1.001.00
 Hispanic/Latino—19961.02 (0.79, 1.32)0.58 (0.44, 0.75)
 Hispanic/Latino—19970.72 (0.55, 0.95)*0.80 (0.65, 0.99)*
 Hispanic/Latino—19980.66 (0.51, 0.86)**0.89 (0.75, 1.05)
 African American—19961.48 (1.29, 1.70)***0.56 (0.48, 0.65)***
 African American—19971.39 (1.19, 1.62)***0.53 (0.46, 0.62)***
 African American—19981.45 (1.25, 1.68)***0.51 (0.45, 0.58)***
 Other race0.79 (0.60, 0.93)**1.09 (0.93, 1.27)
Education
 No high school diploma1.001.00
 High school graduate—19961.35 (1.13, 1.61)***0.94 (0.78, 1.13)
 High school graduate—19971.27 (1.06, 1.53)**1.13 (0.95, 1.33)
 High school graduate—19981.15 (0.97, 1.36)1.27 (1.10, 1.46)***
 College graduate—19961.32 (1.05, 1.65)*0.94 (0.75, 1.17)
 College graduate—19971.31 (1.04, 1.66)*1.26 (1.03, 1.54)*
 College graduate—19980.96 (0.77, 1.20)1.50 (1.26, 1.79)***
Infant Gender
 Male1.001.00
 Female0.88 (0.82, 0.94)***1.05 (0.98, 1.11)
Mother’s marital status
 Married1.001.00
 Unmarried1.13 (1.03, 1.25)*0.86 (0.79, 0.93)***
Maternal smoking status
 Nonsmoker1.001.00
 Smoked during pregnancy—19960.80 (0.64, 1.00)*1.19 (0.97, 1.45)
 Smoked during pregnancy—19970.99 (0.79, 1.22)1.02 (0.85, 1.16)
 Smoked during pregnancy—19981.04 (0.85, 1.25)1.00 (0.85, 1.16)
Prenatal care initiation
 Second trimester1.001.00
 First trimester0.94 (0.86, 1.03)1.04 (0.96, 1.13)
 Third trimester (or never)1.19 (0.41, 3.50)0.86 (0.33, 2.22)
Birth cohort
 19961.001.00
 19970.82 (0.63, 1.05)1.29 (1.02, 1.64)*
 19980.85 (0.67, 1.08)1.50 (1.20, 1.88)***
Birth weight
 >2500g1.001.00
 1501–2500 g—19960.94 (0.84, 1.06)0.80 (0.71, 0.90)***
 1501–2500 g—19970.90 (0.80, 1.02)0.94 (0.84, 1.05)
 1501–2500 g—19980.91 (0.81, 1.03)0.99 (0.90, 1.08)
 1001–1500 g—19961.05 (0.77, 1.44)0.54 (0.39, 0.75)***
 1001–1500 g—19971.02 (0.80, 1.29)0.69 (0.52, 0.91)**
 1001–1500 g—19981.02 (0.79, 1.32)0.67 (0.52, 0.88)**
 500–1000 g—19961.14 (0.82, 1.58)0.45 (0.29, 0.70)***
 500–1000 g—19970.74 (0.52, 1.03)0.66 (0.42, 1.03)
 500–1000 g—19961.03 (0.72, 1.47)0.51 (0.36, 0.72)***
Mother’s age at birth
 26–30 y1.001.00
 12–19 y1.48 (1.28, 1.71)***0.807 (0.71, 0.92)***
 20–25 y1.20 (1.09, 1.33)***0.822 (0.75, 0.90)***
 31–60 y0.93 (0.84, 1.03)1.027 (0.94, 1.12)
Birth order
 First child1.001.00
 Second child1.30 (1.19, 1.42)***0.81 (0.75, 0.87)***
 Third child1.55 (1.39, 1.74)***0.75 (0.68, 0.82)***
 Fourth or higher child1.65 (1.42, 1.91)***0.73 (0.64, 0.83)***
State effectsNot shown
  • The first column shows AOR in which the dependent variable is prone sleeping. The second column shows parallel results in predicting supine sleeping.

  • *** P < .001

  • ** P < .01

  • * P < .05