TABLE 2

Outcomes of Singleton Infants Born at ≥37 Weeks’ Gestation

2004–2008 (n = 20 708), %2010–2015 (n = 24 897), %P
Gestational category, completed wk<.0001
 37–<3932.525.7
 39–<4157.964.6
 ≥419.69.7
NICU admissiona
 No admission or <4 h90.891.2
 ≥4 h9.28.8.22a
  Short stays (4–<24 h)5.44.6.0001a
  Long stays (≥24 h)3.84.2.01a
NICU diagnoses
 Hypoglycemia1.43.0<.0001
 Hyperbilirubinemia requiring phototherapy0.71.1<.0001
 Feeding immaturity requiring nasogastric feeds0.40.4.57
 RDS0.30.3.88
 TTN1.61.8.25
 Thermoregulatory immaturity requiring incubator0.70.7.45
  • —, 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.