TABLE 2

Bivariate Predictors of Rebound Hyperbilirubinemia

VariableN TotalN Rebound% ReboundOR95% CIP
Sex.43
 Female32181424.4Reference
 Male38301824.81.080.89–1.31
Gestational age, wk<.001
 35643284.41.901.30–2.78
 36834597.13.181.82–5.57
 3713141209.14.202.63–6.71
 381152343.01.270.88–1.84
 391615503.11.340.97–1.84
 401070252.3Reference
 4142081.90.810.39–1.69
Birth wt, g.002
 <200013110.80.150.03–0.69
 2000–2499554162.90.600.36–0.98
 2500–29991674925.51.170.90–1.51
 3000–349924461164.7Reference
 3500–39991620744.60.960.69–1.34
 4000–4499490193.90.810.39–1.69
 ≥450013264.50.960.38–2.41
Infant race and ethnicity<.001
 White2106823.9Reference
 Asian23571375.81.521.13–2.05
 Hispanic1607754.71.210.77–1.90
 African American356133.70.940.56–1.56
 Other45381.80.690.33–1.45
DAT<.001
 Negative33401354.0Reference
 Positive1019918.92.331.76–3.08
 Not done2689983.60.900.64–1.25
Feeding during phototherapy hospitalization<.001
 Breast milk only20511316.4Reference
 1–3 formula feedings994464.60.710.47–1.07
 4–10 formula feedings2605913.50.530.43–0.66
 ≥11 formula feedings1107373.30.510.32–0.80
Age at phototherapy initiation, per day0.470.39–0.56<.001
Age at phototherapy termination, per day0.460.35–0.60<.001
Relative TSB at phototherapy termination, per mg/dL1.551.41–1.70<.001
Home phototherapy at discharge<.001
 No67382904.3Reference
 Yes3103411.02.741.84–4.08
Born before BuBc recalibration.17
 No52732534.8Reference
 Yes1775714.00.830.63–1.08
  • —, not applicable.