TABLE 5

Comparison of Resource Usages for Infants Who Survived Between CNN and NRNJ

Resource UseUnivariable AnalysisMultivariable Analysis
CNNNRNJEstimate (SE)
Days on oxygen, median (IQR)
 All VLBW2 (0–14)15 (1–55)**1.33 (0.04)**
 <25 wk25 (5–42)91 (61–125)**1.20 (0.12)**
 25–26 wk13 (3–30)63 (34–87)**1.15 (0.093)**
 27–28 wk6 (0–18)36 (4–56)**1.07 (0.053)**
 >28 wk0 (0–3)4 (1–16)**1.28 (0.05)**
Days on CPAP, median (IQR)
 All VLBW5 (1–20)2 (0–21)**0.19 (0.034)**
 <25 wk19 (8–31)15 (0–29)†0.10 (0.07)
 25–26 wk22 (10–34)18 (1–33)**0.11 (0.038)*
 27–28 wk13 (4–27)12 (0–30)0.31 (0.037) **
 >28 wk1 (0–5)0 (0–5)**0.68 (0.052) **
Days on ventilation, median (IQR)
 All VLBW2 (0–10)4 (0–30)**0.76 (0.037)**
 <25 wk46 (28–60)59 (41–77)**0.13 (0.073)
 25–26 wk22 (7–40)38 (21–53)**0.31(0.46) **
 27–28 wk3 (1–10)8 (2–26)**0.70 (0.057)**
 >28 wk0 (0–2)0 (0–4)0.60 (0.063)**
Length of hospital stay, median (IQR)
 All VLBW43 (20–69)81 (58–115)**0.80 (0.015)**
 <25 wk109 (75–131)145 (124–174)**0.39 (0.060) **
 25–26 wk81 (55–105)120 (103–142)**0.45 (0.30)*
 27–28 wk54 (32–73)92 (78–113)**0.61 (0.025)**
 >28 wk27 (14–44)60 (46–75)**0.92 (0.02)**
  • Nonparametric Mood median test was used. Zero-inflated models were used for the outcome, with the exception of length of stay. Linear regression models were used for length of stay in log scale. CPAP, continuous positive airway pressure; IQR, interquartile range.

  • ** P < .0001; *P < .01; †P < .05 (Japan versus Canada).