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Table 8 Relationship between emphysema and airway quantitative imaging analysis parameters and pulmonary function measurements among deployers

From: Quantitative imaging analysis detects subtle airway abnormalities in symptomatic military deployers

Variable

n

Estimated change βa [95% CI]

 + 1% LAA%-950

 + 1 mm Pi10

FEV1PP

82

 0.4 [ 1.0, 0.2]

14.1 [−19.6, −8.5]

FEV1/FVC

82

0.4 [−0.7, −0.05]

8.6 [−11.5, −5.7]

RVPP

76

0.4 [ 0.5, 1.3]

11.6 [2.4, 20.9]

RV/TLC

76

0.2 [ 0.04, 0.4]

1.7 [ 0.7, 4.2]

DLCOPP

75

 0.8 [ 1.8, 0.06]

0.6 [-9.4, 10.7]

  1. Bold values are statistically significant
  2. a = All measures were adjusted for smoking pack-years and body mass index. LAA%-950, Pi10, and LAA%-856 are also adjusted for total lung volume (inspiratory or expiratory as appropriate)