Table 3.
Slopes of all indices according to the random effect modeling
| Slope infrequent | Slope frequent | P-value | |
|---|---|---|---|
| IC, mL | 38 | 105 | 0.420 |
| FVC% | −2.20 | −1.73 | 0.762 |
| FEV1, mL | −85.57 | −54.72 | 0.129 |
| FEV1, % predicted | −2.84 | −1.7 | 0.212 |
| FEV1/FVC | −1.46 | −0.84 | 0.357 |
| 6MWD, % predicted | −2.04 | −2.88 | 0.672 |
| mMRC, points | −0.04 | −0.04 | 0.259 |
| BODE index, points | 0.136 | 0.276 | 0.387 |
| SGRQ, points | −0.74 | 0.73 | 0.331 |
Abbreviations: IC, inspiratory capacity; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; 6MWD, 6-minute walking distance; mMRC, modified Medical Research Council; BODE, body mass index, airflow obstruction, dyspnea, exercise performance; SGRQ, St George’s Respiratory Questionnaire; CRQ, Chronic Respiratory Questionnaire.