Parameters/Groups Preterm with BPD (n=30) Preterm without BPD (n=28) T-test  
t P
Cord blood KL-6 (U/ml) 252.68 ± 21.59 78.58 ±12.44 34.94 0.001*
Urinary B2M (mg/L) 10.39 ± 1.82 2.05 ± 0.57 21.91 0.011*
Adiponectin  level (ng/ml) 2.38 ± 0.43 2.62 ± 0.38 7.25 0.398
BAL NGAL2 mRNA expression level 0.63 ± 0.17 0.49 ± 0.09 12.7 0.021*
Table 2: Comparison of cord blood Krebs Von den Lungen-6 (KL-6) (U/ml) and urinary beta 2 Microglobulin (β2MG) (mg/L), adiponectin ((ng/ml) andbroncho-alveolar lavage fluid (BAL) neutrophilgelatinase- associated lipocalin2 (NGAL2) mRNA gene expression levels between both studied groups using T-test.