TABLE 3

Risk of Early Term Delivery and NICU Admission in the Postperiod (2010–2015) Versus the Preperiod (2004–2008) After a Hospital Policy to Eliminate Early Elective Deliveries Before 39 Weeks’ Gestation

OutcomeModel 0, RR (95% CI)Model 1, RR (95% CI)Model 2, RR (95% CI)Model 3, RR (95% CI)
Early term delivery0.79 (0.77–0.81)0.79 (0.76–0.82)
NICU admissiona
 ≥4 h0.96 (0.91–1.02)0.97 (0.92–1.03)0.91 (0.86–0.97)0.89 (0.84–0.95)
  Short stays (≥4–<24 h)0.85 (0.79–0.92)0.85 (0.79–0.93)0.83 (0.77–0.91)0.81 (0.75–0.88)
  Long stays (≥24 h)1.12 (1.02–1.23)1.15 (1.05–1.26)1.00 (0.92–1.10)0.98 (0.89–1.08)
  • Model 0 was unadjusted; model 1 was adjusted for maternal age, race and/or ethnicity, insurance status, parity, mode of delivery, diabetes, and hypertension; model 2 was model 1 with an additional adjustment for neonatal hypoglycemia; and model 3 was model 2 with an additional adjustment for neonatal hyperbilirubinemia. —, not applicable.

  • a NICU admission, short NICU stays, and long NICU stays are each compared with no NICU admission or NICU stays of <4 h.