Table 2.
Multivariate linear regression analysis to describe associations of GOLD axes and comorbidities with CAT
| Crude
|
Adjusted*
|
|||
|---|---|---|---|---|
| β | 95% CI | β | 95% CI | |
| Dyspnea (MRC) | 3.380 | 2.896–3.865 | 2.500 | 1.688–3.312 |
| Exacerbations (n) | 2.086 | 1.784–2.389 | 1.555 | 1.016–2.095 |
| Spirometric impairment (FEV1) | 3.401 | 2.369–4.433 | 2.194 | 1.235–2.153 |
| Comorbidities (Charlson comorbidity index) | 1.899 | 1.568–2.229 | 0.654 | 0.072–1.237 |
Notes:
*
Corrected also by age and sex.
Abbreviations: CAT, COPD Assessment Test; CI, confidence interval; FEV1, forced expiratory volume in 1 second; GOLD, Global Initiative for Obstructive Lung Disease; MRC, modified Medical Research Council scale.