Table S2.
Linear multivariate regression analysis: association between SGRQ total-score and exacerbation frequency adjusted for sex, augmentation therapy and occupational dust exposure
| Variables | Unstandardized coefficient, B | Standardized coefficient, β | 95% CI | P-value |
|---|---|---|---|---|
| Exacerbation frequency | 8.09 | 0.41 | 6.86 to 9.31 | <0.001 |
| Sex, female | 0.29 | 0.01 | −2.41 to 2.98 | 0.834 |
| Augmentation therapy | 10.04 | 0.24 | 7.44 to 12.64 | <0.001 |
| Occupational dust exposure | 5.88 | 0.14 | 3.16 to 8.61 | <0.001 |
| Dependent variable: SGRQ total-score |
Abbreviations: CI, confidence interval; SGRQ, St George’s Respiratory Questionnaire.