Table 4.
Linear regression model coefficients for adult spirometry parameters
| Regression Coefficients (P value) |
|||||
|---|---|---|---|---|---|
| Pulmonary Function Test | α0 | α1 (age dependence) | α2 (height2 dependence) | α3 [(r/R)2 dependence] | Model P Value |
| FEV1, liter | −0.094 ± 0.7 (0.90) | −0.047 ± 0.006 (2.8E-7) | (1.5 ± 0.2) E-4 (3.2E-6) | 2.9 ± 1.1 (0.016) | 6.9E-9 |
| FVC, liter | −1.1 ± 1.0 (0.30) | −0.044 ± 0.009 (6.6E-5) | (2.0 ± 0.3) E-4 (7.5E-6) | 3.7 ± 1.6 (0.028) | 4.5E-7 |
Values are means ± SD. Lung function parameter = α0 + α1 age + α2 height2 + α3 (r/R)2 (age in years, height in cm). Significant P values are given in bold.