Outcome | Adjusted mean difference* | 95% CI | p-value |
FEV1 %pred | 0.256 | -1.383 - 1.895 | 0.757 |
FVC %pred | -0.236 | -2.410 - 1.937 | 0.830 |
PEF %pred | 0.619 | -2.518 - 3.756 | 0.696 |
*Adjusted for smoking, body mass index, personal history of respiratory problems, family history of respiratory problems