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. Author manuscript; available in PMC: 2013 Apr 4.
Published in final edited form as: Pediatr Res. 2012 Feb 15;71(4 0 1):399–406. doi: 10.1038/pr.2011.73

Table 5.

Infant Characteristics and Specific Outcomes: Pregnancies resulting in an infant with BPD based on study criteria with and without a biomarker risk present

BPD With Biomarker Risk *
No (n = 164)
Yes (n = 82)
Mean (SD) Mean (SD)
Range Range
Days Gestation 186.8 (9.7)
166 – 211
190.9 (10.7) §
170 – 223
Birth Weight (grams) 902.1 (186.8)
509 – 1440
838.0 (213.3)
422 - 1375
Head Circumference (cm) ** 24.3 (1.7)
21 - 29
24.5 (2.5)
19 - 34
Head Circumference/ Birth Weight Ratio** 0.028 (0.004)
0.019 – 0.039
0.030 (0.007)
0.020 – 0.054
Total Days on Ventilator 26.3 (18.5)
3 - 91
30 (22.4)
3 - 110
n (%) n (%)
SGA 7 (4.3) 22 (26.8)§
Apgar at 1-Minute ≤ 3 30 (18.3) 21 (25.6)
Apgar at 5-Minutes ≤ 3 9 (5.5) 2 (2.4)
Baby Death in NICU 2 (1.2) 3 (3.7)
Any Infant Infection 42 (25.6) 27 (32.9)
 Group B Strep 9 (5.5) 5 (6.1)
 Early Bacterial Sepsis 6 (3.7) 1 (1.2)
 Late Bacterial Sepsis 30 (18.3) 22 (26.8)
 Late Fungal Sepsis -- 1 (1.2)
Retinopathy of Prematurity (ROP) 98 (59.8) 54 (65.9)
Patent Ductus Arteriosus (PDA) 138 (84.2) 63 (76.8)
Intraventricular Hemorrhage (IVH) 73 (44.5) 17 (20.7) §

SGA, Small-for-gestational-age; IUGR, intrauterine growth retardation.

*

AFP MoM ≥ 95th percentile (MoM ≥ 1.80), hCG MoM ≥ 95th percentile (MoM ≥ 2.38), or uE3 MoM ≤ 5th percentile (MoM ≤ 0.59).

**

Computed for 56 of those in the BPD nobiomarker risk group and 18 of those in the BPD biomarker risk group who had head circumference data present in the CPQCC database.

Birth weight for gestational age ≤ 10th percentile based on smoothed US birth norms (1)

p < .05

§

p < .0