The IL-6 cord blood levels were significantly higher (median 102.69 vs. 25.07 pg/ml, p = 0.02) in the BPD group than in infants without BPD, but the OR was very small, and for every 1-pg/ml increase in the cord blood IL-6, there was a relatively small risk increase in the development of BPD [OR = 1; 95% confidence interval (CI), 1.000–1.000]. Here, IL6 is linked to bronchopulmonary dysplasia.