Change between 8 and 18 years | |||
---|---|---|---|
Variable | BPD | No BPD | Interaction |
zFEV1 | −0.27 (−0.47 to −0.06) p=0.012 | −0.04 (−0.16 to 0.09) p=0.58 | −0.22 (−0.44 to −0.01) p=0.044 |
zFVC | 0.50 (0.25 to 0.75) p<0.001 | 0.33 (0.17 to 0.49) p<0.001 | 0.15 (−0.12 to 0.42) p=0.28 |
zFEV1/FVC | −1.29 (−1.66 to −0.92) p<0.001 | −0.74 (−0.97 to −0.51) p<0.001 | −0.47 (−0.86 to −0.09) p=0.016 |
zFEF25%–75% | −0.31 (−0.53 to −0.09) p=0.006 | 0.06 (−0.10 to 0.22) p=0.44 | −0.36 (−0.61 to −0.10) p=0.006 |
zFEF75% | −0.56 (−0.83 to −0.29) p<0.001 | −0.19 (−0.38 to −0.00) p=0.049 | −0.34 (−0.64 to −0.03) p=0.029 |
Values are mean difference (95% CI), unless otherwise stated.
BPD, bronchopulmonary dysplasia; FEF25%–75%, forced expiratory flow at 25%–75% of FVC; FEF75%, forced expiratory flow at 75% of FVC expired.