TABLE 3

Lung Function Tests Compared Between Groups at Age 8 Years

Lung Function VariableBPD, n = 29No BPD, n = 100Mean Difference (95% CI) P
FVC, % predicted88.7 (16.2)95.2 (14.6)−6.6 (−12.8 to −0.3); P = .039
FEV1, % predicted80.4 (15.9)90.0 (14.4)−9.6 (−15.7 to −3.4); P = .002
FEV1/FVC, %81.8 (10.8)85.1 (8.3)−3.3 (−7.0 to 0.4); P = .08
FEF25–75%, % predicted65.4 (27.2)75.3 (21.1)a−9.9 (−19.4 to −0.5); P = .04
V′EMAX75%, % predicted81.8 (21.7)a92.0 (21.7)b−10.1 (−19.3 to −0.9); P = .031
V′EMAX50%, % predicted81.4 (30.4)a93.9 (25.7)b−12.5 (−23.9 to −1.1); P = .032
V′EMAX25%, % predicted83.8 (40.9)a96.0 (32.2)b−12.2 (−26.8 to 2.3); P = .10
TLC, % predicted101.8 (12.3)104.2 (12.7)c−2.4 (−7.7 to 2.4); P = .38
RV, % predicted145.2 (53.3)132.4 (39.0)c12.9 (−5.1 to 30.9); P = .16
RV/TLC, %37.3 (11.1)33.4 (8.6)c3.9 (0.1 to 7.8); P = .046
  • Data are mean (SD), unless otherwise specified.

  • a n = 1 missing data.

  • b n = 2 missing data.

  • c n = 7 missing data.