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Table 3 Baseline characteristics of the study population included in phase 2.

From: Development and validation of serum bilirubin nomogram to predict the absence of risk for severe hyperbilirubinaemia before discharge: a prospective, multicenter study

Variables Neonates (2167)
Gestational age (wks) 38.9 ± 1.5
> 37 wks 1983 (91.5)
35 - 36 wks 184 (8.5)
Birth weight (g) 3237 ± 471
Small for gestational age 115 (5.3)
Male 1137 (52.5)
Race  
White 1952 (90.1)
Asian 106 (4.9)
Black African 55 (2.5)
Hispanic 54 (2.5)
Mode of delivery  
Vaginal 1159 (53.5)
Cesarean section 953 (44)
Vacuum extractor 55 (2.5)
Apgar score  
< 7 at 1' 53 (2.4)
< 7 at 5' 0
Feeding  
Exclusive breast feeding 1267 (58.5)
Breast + bottle feeding 848 (39.1)
Bottle feeding 52 (2.4)
Weight loss > 10% 127 (5.9)
Age at TSB (h.) 63 ± 21
TSB value (mg/dL) 9.4 ± 0.6
Significant hyperbilirubinemia 55 (2.5)
Required phototherapy 46 (2.1)
TSB > 17 mg/dL 9 (0.4)
  1. Values expressed as mean ± SD or number (%)