Preterm with BPD (n=30) Preterm without BPD (n=28) T-test or chi-square t or  X2 P-value Gestational age (weeks) 32.20±1.20 32.77±1.00 1.83 0.07 Birth weight (grams) 1906.00±179.00 1970.00±169.00 1.30 0.20 Apgar score 1 min 4.02±1.03 4.65±1.62 1.64 0.11 Apgar score 5 min 6.54±1.22 6.89±2.05 0.73 0.47   Sex Female 15 (54%) 24 (48%) X2=0.22 0.64 Male 13 (46%) 26 (52%)

Table 1: Comparison of gestational age, birth weight Apgar score at 1 and 5 minutes and sex of both studied groups using T-test and chisquare test.