RESULTS
This study included a total of 286 adolescents with technically
acceptable spirometry results (Figure 1). Pulmonary volumes and lung
diffusion measurements were obtained from 121 and 101 participants,
respectively. Descriptive data during the neonatal period and at early
follow-up (first 6 years of life), findings of skin prick tests, and
parental history are presented in Table 1. E-table 1 shows BPD
definitions used in the centers, the BPD sub-classification based on
severity, and the incidence and duration of home oxygen therapy.
Approximately 28% of infants with BPD required oxygen supplementation
at home, with an average duration of 3 months (1st and 3rd Q 2 and 6,
respectively). Mean (SD) duration of home oxygen therapy was
significantly longer in the “high-severity” BPD subgroup than in the
“low severity” BPD subgroup (3.06 [6.40] vs. 0.23 [0.63]
months; p = 0.003).