Table 2.
Lung Function Parameters (LFPs) at First and Final Lung Function Test (LFT) (n = 115)
| LFPs | First LFT | Final LFT | p-value |
|---|---|---|---|
| Forced vital capacity (FVC) | |||
| LLN (L) | 3.08 (2.95, 3.21) | 3.04 (2.92, 3.16) | 0.673 |
| Pre-BD (L) | 2.32 (2.18, 2.46) | 2.28 (2.15, 2.42) | 0.674 |
| Pre-BD (%) | 60.82 (57.68, 63.96) | 60.62 (57.51, 63.73) | 0.926 |
| Post-BD (L) | 2.41 (2.28, 2.55) | 2.39 (2.26, 2.52) | 0.799 |
| Post-BD (%) | 63.35 (60.29, 66.4) | 63.35 (60.34, 66.36) | 0.999 |
| BDR (%) | 5.32 (3.5, 7.14) | 6.62 (3.42, 9.81) | 0.486 |
| Forced expiratory volume in one second (FEV1) | |||
| LLN (L) | 2.4 (2.3, 2.49) | 2.36 (2.26, 2.45) | 0.583 |
| Pre-BD (L) | 1.61 (1.49, 1.74) | 1.56 (1.43, 1.69) | 0.581 |
| Pre-BD (%) | 53.19 (49.36, 57.03) | 52.14 (48.18, 56.1) | 0.706 |
| Post-BD (L) | 1.71 (1.58, 1.84) | 1.66 (1.53, 1.79) | 0.591 |
| Post-BD (%) | 56.42 (52.51, 60.32) | 55.41 (51.51, 59.3) | 0.718 |
| BDR (%) | 7.29 (5.4, 9.17) | 8.09 (5.96, 10.21) | 0.577 |
| FEV1/FVC | |||
| LLN (AV) | 0.7 (0.69, 0.7) | 0.69 (0.69, 0.7) | 0.125 |
| Pre-BD (AV) | 0.68 (0.66, 0.71) | 0.67 (0.64, 0.69) | 0.351 |
| Pre-BD (%) | 85.61 (82.25, 88.97) | 83.57 (80.21, 86.94) | 0.395 |
| Post-BD (AV) | 0.7 (0.67, 0.73) | 0.68 (0.65, 0.7) | 0.314 |
| Post-BD (%) | 87.32 (83.79, 90.85) | 85.15 (81.73, 88.57) | 0.381 |
Notes: Data were mean (95% confidence interval). P-values were obtained via 2-tailed Students t-test.
Abbreviations: AV, absolute value; BD, bronchodilator; BDR, bronchodilator responsiveness; LLN, lower limit of normal.