Table 4.

Multivariable Analyses of Association Between the Relevant Peak Serum Bilirubin Concentration Variable and Potential Confounding Variables, and Blindness Attributable to Retinopathy of Prematurity

Variables (Units Used to
Compute Odds
Ratios in Parentheses)
Association With
Peak bilirubin ≥200 μmol/L
(20 μmol/L)
2.89 (1.14–9.53).081
pH variable* (per low pH measure)1.16 (1.00–1.26).074
IVH grades 3 and 45.38 (1.83–15.84).003
  • * Total number of pH measurements <7.25 during the period that the serum bilirubin concentration exceeded 100 μmol/L.