Table 3.
—PFT Results from the Pulmonary Subspecialty Evaluation
| Exposure Status |
|||||
| Pulmonary Evaluation | Total | High | Intermediate | Low | P Valuea |
| FEV1, value (IQR) | 3.78 (3.32-4.21) | 3.84 (3.28-4.18) | 3.78 (3.35-4.23) | 3.67 (3.17-4.23) | .6922 |
| FEV1, % predicted (IQR) | 93.0 (83.0-101.0) | 93.0 (83.0-101.0) | 93.0 (83.0-102.0) | 92.5 (79.0-102.0) | .7665 |
| FVC, value (IQR) | 4.93 (4.40-5.47) | 4.88 (4.32-5.42) | 4.94 (4.44-5.49) | 4.91 (4.41-5.32) | .6559 |
| FVC, % predicted (IQR) | 98.0 (89.0-106) | 96.0 (88.0-105.0) | 98.0 (89.0-106.0) | 99.5 (92.0-106.0) | .0363 |
| FEV1/FVC × 100 (IQR) | 77.47 (72.19-81.61) | 78.52 (73.19-82.39) | 77.18 (71.88-81.38) | 76.79 (69.30-81.46) | .7751 |
| BD, % change (IQR) | 6.0 (3.0-12.0) | 5.0 (3.0-12.0) | 6.0 (3.0-12.0) | 6.0 (4.0-12.0) | .8599 |
| RV, value (IQR) | 2.38 (2.01-2.91) | 2.37 (1.96-2.88) | 2.38 (2.01-2.89) | 2.85 (2.01-3.32) | .0154 |
| RV, % predicted (IQR) | 123.0 (106.0-147.0) | 124.5 (106.0-149.0) | 122.0 (106.0-146.0) | 131.0 (105.0-161.0) | .9603 |
| FRC, value (IQR) | 3.35 (2.85-3.95) | 3.31 (2.84-3.89) | 3.35 (2.85-3.96) | 3.73 (3.07-4.20) | .9016 |
| FRC, % predicted (IQR) | 96.0 (83.0-112.0) | 96.0 (83.0-111.0) | 96.0 (83.0-112.0) | 104.0 (93.0-118.0) | .8721 |
| TLC, value (IQR) | 7.14 (6.38-7.86) | 7.02 (6.26-7.79) | 7.14 (6.41-7.89) | 7.34 (6.57-7.81) | .8279 |
| TLC, % predicted (IQR) | 101.0 (91.0-109.0) | 99.0 (90.0-109.0) | 101.0 (92.0-109.0) | 101.0 (91.0-114.0) | .9360 |
| DLCO, value (IQR) | 29.82 (26.09-33.47) | 29.49 (25.40-33.67) | 30.02 (26.27-33.30) | 28.23 (24.16-33.96) | .5041 |
| DLCO, % predicted (IQR) | 104.0 (91.0-114.0) | 102.0 (90.0-114.0) | 104.0 (92.0-114.0) | 103.5 (90.0-117.0) | .6058 |
BD = bronchodilator; DLCO = diffusing capacity of carbon monoxide; FRC = functional residual capacity; PFT = pulmonary function test; RV = residual volume; TLC = total lung capacity. See Table 1 for expansion of other abbreviations.
a
P test for trend controlling for tobacco use, gender, height, weight, age, and race. Data represented as medians with interquartile range.