Table 2. Correlation between CAT scores, dyspnea, respiratory secretions, and treatment response.
| Variables | Unadjusted OR (95% CI) | P value | Adjusted ORa (95% CI) | P value |
|---|---|---|---|---|
| CAT scoreb | 0.993 (0.965–1.02) | 0.341 | 1.011 (0.949–1.077) | 0.736 |
| ΔCAT (day 3–day 1) | 1.134 (0.927–1.646) | 0.020 | 1.35 (1.01–1.391) | 0.043 |
| ΔCAT (day 5–day 1) | 0.98 (0.923–1.042) | 0.518 | 1.054 (0.963–1.157) | 0.259 |
| ΔDyspnea (day 5–day 1) | 4.97 (0.083–12.17) | 0.444 | 5.509 (2.326–15.242) | < 0.001 |
| ΔRespiratory secretions (day 5–day 1) | 2.05 (0.3–7.14) | 0.100 | 3.561 (1.62–8.907) | 0.003 |
CAT = chronic obstructive pulmonary disease assessment test, OR = odds ratio, CI = confidence interval, Δ = delta change, FEV1 = forced expiratory volume in 1 second.
aCorrected for age, sex, smoking status, exacerbations in the previous year, type of antibiotics, and post-FEV1% predicted; bOn the first day of exacerbation.