title: Predicting the risk of jaundice in full-term healthy newborns: a prospective population-based study.
abstract: OBJECTIVE
  The need to recognize infants that are at high risk for developing significant jaundice is apparent in the era of routine early discharge. The aim of the present study was to prospectively determine the ability to predict severe hyperbilirubinemia in term healthy newborns (defined as total serum bilirubin of > 10.0 mg/dl at day 2, > 14.0 mg/dl at day 3, and > 17.0 mg/dl at days 4 and 5 of life).
  
  
  METHODS
  Prospective study of 1177 healthy term newborns.
  
  
  METHODS
  Two university-affiliated community hospitals in Jerusalem.
  
  
  RESULTS
  Using a multiple logistic regression analysis, neonatal jaundice was best predicted (p < 0.0001) by day 1 serum bilirubin (adjusted odds ratio of 3.1 [per mg/dl] [95% confidence limits of 2.4 to 4.1]) and by a change in serum bilirubin from the first to the second day of life (2.4 [per mg/dl] [1.9 to 3.0]). Maternal blood type 0 (2.9 [1.5 to 5.8]), age (1.1 [per year] [1.0 to 1.2]), schooling (0.8 [per year] [0.7 to 0.9]), and full breastfeeding (0.4 [0.2 to 0.9]) were also associated with jaundice (p < 0.005). Other factors considered in the regression model but not found to be significantly related to jaundice included maternal ethnic origin, smoking, hypertension, diabetes mellitus, intranatal administration of oxytocin, meperidine, anesthesia, premature rupture of the membranes, parity, newborn sex, birth weight, gestational age, presentation. Apgar scores, blood type, hematocrit, cephalohematoma, and history of jaundice in other siblings. A model for predicting neonatal jaundice based on the above factors had a sensitivity of 81.8%, a specificity of 82.9%, a false positive rate of 80.2%, and a false negative rate of 1.1%.
  
  
  CONCLUSIONS
  Individual risk assessment on discharge in association with day 1 total serum bilirubin is of value in identifying infants at greater risk for neonatal jaundice.
authors.affiliation: Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel-Hashomer, Israel.
authors.forename: D S
authors.initials: DS
authors.lastname: Seidman
authors.forename: Z
authors.initials: Z
authors.lastname: Ergaz
authors.forename: I
authors.initials: I
authors.lastname: Paz
authors.forename: A
authors.initials: A
authors.lastname: Laor
authors.forename: S
authors.initials: S
authors.lastname: Revel-Vilk
authors.forename: D K
authors.initials: DK
authors.lastname: Stevenson
authors.forename: R
authors.initials: R
authors.lastname: Gale
mesh_terms: D001663:Bilirubin / Q000097:blood*; D016001:Confidence Intervals; D005260:Female; D005544:Forecasting / Q000379:methods; D006801:Humans; D007231:Infant, Newborn; D007557:Israel; D007567:Jaundice, Neonatal / Q000097:blood* / Q000175:diagnosis; D016015:Logistic Models; D008297:Male; D016017:Odds Ratio; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012307:Risk Factors; D012680:Sensitivity and Specificity
chemical_list: D001663:Bilirubin