TABLE 2

Factors Associated With Refusal of IM Vitamin K Administration, Multivariable Adjusted Analysis

AssociationsaOR (95% CI)
Sex
Female1.6 (1.2–2.3)
 MaleRef
Race and/or ethnicity
 Non-Hispanic white1.7 (1.2–2.4)
 OtheraRef
Delivery
 Vaginal(0.7–1.6)
 CesareanRef
Insurance
 Private1.2 (0.8–1.6)
 PublicRef
Feeding
 Breastmilk only3.4 (2.1–5.5)
 Formula or combinationbRef
 Gestational age, wkc(1.1–1.4)
 Mother’s age, yc1.05 (1.02–1.08)
  • a Hispanic, African American, Asian American, Pacific Islander, American Indian, other, or unknown.

  • b Combination feeding is defined as feeding with breastmilk and with formula.

  • c Gestational age (wk) and mother’s age (y) were entered into the logistic regression models as continuous variables.