Table 3.
Mean Change of Pulmonary Function From Baseline to Follow-Up Visit
| Variable | Data Available, No. | Continuous Use of Airway Clearance (n = 226; 25%) | Intermittent Use of Airway Clearance (n = 351; 39%) | No Use of Airway Clearance (n = 328; 36%) | P Value |
|---|---|---|---|---|---|
| FEV1 | |||||
| Before bronchodilator, mean (SD), L | |||||
| At baseline | 783 | 1.82 (0.76) | 1.77 (0.68) | 1.88 (0.72) | .205 |
| At 1-year follow-up visit | 434 | 1.81 (0.76) | 1.82 (0.69) | 1.87 (0.72) | .821 |
| Mean change from baseline to 1-year follow-up visit | 394 | −0.03 (0.40) | −0.02 (0.33) | −0.01 (0.35) | .899 |
| FVC | |||||
| Before bronchodilator, mean (SD), L | |||||
| At baseline | 770 | 2.70 (0.90) | 2.67 (0.86) | 2.72 (0.93) | .763 |
| At 1-year follow-up visit | 432 | 2.71 (0.94) | 2.75 (0.85) | 2.77 (0.85) | .805 |
| Mean change from baseline to 1-year follow-up visit | 390 | 0.03 (0.42) | 0.01 (0.37) | −0.03 (0.31) | .431 |