TABLE 2.

Data Relating to Phototherapy for the G-6-PD-Deficient and G-6-PD-Normal Neonatal Groups

CategoryG-6-PD-Deficient (n = 64)G-6-PD-Normal (n = 436)Significance (P Value)
No. requiring phototherapy13 (20.3%)*25 (5.7%)
Age at onset, h50 ± 2647 ± 26.6
Age at discontinuation, h82 ± 2681 ± 20.8
Duration of phototherapy, h25 (17–33)24 (20–50).5
PTB level at onset, μmol/L245 ± 58238 ± 53.65
PTB level at onset, mg/dL13.9 ± 3.413.2 ± 3.2
Highest noted PTB level, μmol/L263 ± 46251 ± 50.5
(Highest noted PTB level, mg/dL15.4 ± 2.714.7 ± 2.9)
PTB level at discontinuation, μmol/L162 ± 38166 ± 21.8
(PTB level at discontinuation, mg/dL9.5 ± 2.29.7 ± 1.2)
Rate of bilirubin decrease, μmol/h3.1 ± 2.12.7 ± 2.9.6
(Rate of bilirubin decrease, mg/h0.18 ± 0.120.16 ± 0.17)
  • Data are presented as mean ± SD or median (interquartile range), as appropriate.

  • * Relative risk: 3.54; 95% confidence interval: 1.91–6.56.

  • Not the natural peak, because PTB concentrations might have been tempered by the institution of phototherapy.