Lung volume measure | β0 | β1 (SE) | β2 (SE) | β3 (SE) | β4 (SE) | β5 (SE) | RSD | R2 |
---|---|---|---|---|---|---|---|---|
FEV1, FEV0.5=forced expiratory volume in 1 or 0.5 seconds; FVC=forced vital capacity; PEF=peak expiratory flow; RSD=residual standard deviation; R2=explained fraction of variance; SE=standard error of regression parameter. Slopes β1, β2 and β3 represent the change per unit change in the respective explanatory variable. Coefficients β4 and β5 give the difference between two groups. | ||||||||
FEV0.5 (l) | –0.84 | 0.0119 (0.0013) | 0.0105 (0.0024) | 0.0044 (0.0009) | 0.038 (0.012) | 0.026 (0.011) | 0.13 | 0.59 |
FEV1 (l) | –1.33 | 0.0161 (0.0017) | 0.0152 (0.0029) | 0.0057 (0.0011) | 0.062 (0.015) | 0.046 (0.014) | 0.17 | 0.64 |
FVC (l) | –1.57 | 0.0171 (0.0019) | 0.0169 (0.0033) | 0.0072 (0.0012) | 0.058 (0.017) | 0.058 (0.015) | 0.19 | 0.64 |
PEF (l/s) | –2.21 | 0.0289 (0.0047) | 0.0238 (0.0082) | 0.0217 (0.0030) | 0.114 (0.042) | 0.052 (0.038) | 0.47 | 0.53 |