Table 11. Additional multiple linear regression analysis to evaluate confusion between the relationship of percent predicted values of forced vital capacity (%FVC) and forced expiratory volume in 1 second, (%FEV1) with scoring of radiographic abnormalities.
| % predicted FVC | % predicted FEV1 | |
|---|---|---|
| Parameter estimates (95% CI) | Parameter estimates (95% CI) | |
| SRAa | -2.48 (-3.45 to -1.50) | -2.92 (-3.87 to -1.97) |
| SRAb | -2.47 (-3.43 to -1.51) | -2.95 (-3.88 to -2.02 |
| Percent change for smoking status (former vs. never)* | -0.40 | 1.03 |
| SRAc | -2.49 (-3.46 to -1.52) | -2.96 (-3.90 to-2.02 |
| Percent change for pack-years of smoking* | 0.40 | 1.37 |
CI; Confidence Interval, SRA Scoring of radiographic abnormalities, * Percent change >10% means confusion.
aAdjusted for smoking status (former vs. never), pack-years of smoking, MRC dyspnea scale, and oxygen pulse saturation.
b
Adjusted for pack-years of smoking, MRC dyspnea scale, and oxygen pulse saturation.
c
Adjusted for smoking (former vs. never), MRC dyspnea scale, and oxygen pulse saturation.