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Table 2 Hematologic features at birth by bronchopulmonary dysplasia status

From: Neonatal hematological parameters and the risk of moderate-severe bronchopulmonary dysplasia in extremely premature infants

Variables Infants without BPD(n = 55) Infants with moderate or severe BPD (n = 60) P value
WBC count,109/l 9.12 (6.28–15.89) 11.2 (6.9–20.9) 0.141
RBC count,1012/l 4.22 (3.74–4.59) 4.2 (3.9–4.5) 0.523
platelet count,109/l 194.00 (131.00–245.00) 228 (189–259)** 0.004
Neutrophils count,109/l 2.95 (1.68–6.46) 5.0 (2.4–13.1)* 0.023
lymphocyte count,109/l 4.14 (3.17–6.94) 4.1 (3.0–6.7) 0.675
Eosinophil count,109/l 0.12 (0.05–0.18) 0.11 (0.06–0.22) 0.492
Basophil count,109/l 0.02 (0.01–0.06) 0.02 (0.01–0.03) 0.060
monocyte count,109/l 0.63 (0.37–1.12) 0.88 (0.57–1.55)* 0.026
Neutrophil percentage, % 37.40 (26.50–57.30) 49.1 (36.6–63.0)* 0.032
Lymphocyte percentage, % 53.45 (33.35–64.83) 38.5 (29.4–54.3)* 0.022
Eosinophil percentage, % 1.20 (0.60–2.03) 1.1 (0.6–1.6) 0.845
Basophil percentage, % 0.30 (0.10–0.50) 0.2 (0.1–0.3)* 0.011
Monocyte percentage, % 6.80 (4.55–8.63) 8.0 (4.9–10.3)* 0.040
Hb level, g/l 161.00 (138.75–179.75) 156 (143–167) 0.523
Hematocrit, % 50.70 (45.40–56.08) 50 (45–52) 0.171
MCV, fl 120.40 (113.35–128.70) 120 (114–124) 0.549
MCH, pg 38.40 (36.05–39.95) 38 (36–40) 0.582
MCHC, g/l 315.00 (306.75–325.50) 319 (307–326) 0.910
RDW, % 16.5 (15.4–17.8) 15.7 (15.3–16.4) 0.079
MPV, fl 9.4 (9.00–9.85) 9.1 (8.7–9.4)** 0.002
PDW, % 16.75 (16.60–17.10) 16.7 (16.4–17.0) 0.273
  1. Data were displayed as median (interquartile range). *p < 0.05 and **p < 0.01 are compared with no BPD group. WBC white blood cell, RBC red blood cell, Hb hemoglobin, MCV mean corpuscular volume, MCH mean corpuscular hemoglobin, MCHC mean corpuscular hemoglobin concentration, RDW red cell distribution width, MPV mean platelet volume, PDW platelet distribution width
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