Neonatology · Paediatrics
Rebound Hyperbilirubinemia Risk Score calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 35–44 weeks
Under 38 weeks adds 15.5 to the score. 38 weeks and older adds 0.
Allowed range: 0–40 mg/dL
Hour-specific AAP phototherapy threshold at the age when phototherapy began, in mg/dL.
Allowed range: 0–40 mg/dL
Ending total serum bilirubin in mg/dL. The gap is the starting threshold minus this value.
Result
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Clinical inputs
- Gestational age (weeks)Accepted range: 35 to 44
- AAP phototherapy threshold at the start (mg/dL)Accepted range: 0 to 40
- Total serum bilirubin when phototherapy stopped (mg/dL)Accepted range: 0 to 40
Primary source
Chang PW, Kuzniewicz MW, McCulloch CE, Newman TB. A Simpler Prediction Rule for Rebound Hyperbilirubinemia. Pediatrics. DOI: 10.1542/peds.2018-3712. PMID: 31196939. Logistic coefficients in the derivation set were 1.55 for gestational age under 38 weeks and −0.43 per mg/dL of starting-threshold minus ending total serum bilirubin. The score multiplies those coefficients by 10: 15.5 if gestational age is under 38 weeks, minus 4.3 times the gap in mg/dL. The paper's worked examples are a gap of 2 mg/dL, with a reported rebound probability of 2.5% at or after 38 weeks (score −8.6) and 10.2% before 38 weeks (score 6.9). A gap of 5.5 mg/dL before 38 weeks (score −8.15) had a reported probability of 2.6%. (2019)
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