Table 6.

Regression analysis for dyspnea remission in terms of ΔIC and ΔFEV₁

Variable	ORa	95% CI	P-value
Emphysema-predominant group (remission, absolute ΔmMRC ≥ 1)
ΔIC ≥300 mL	2.29	1.54–3.39	0.034
ΔFEV1 ≥300 mL	1.39	1.12–1.73	0.221
Non-emphysema-predominant group (obvious remission, absolute ΔmMRC >1)
ΔIC ≥300 mL	10.20	1.07–97.41	0.044
ΔFEV1 ≥300 mL	3.64	0.60–22.23	0.162
ΔFEV1 ≥400 mL	7.143	1.12–45.52	0.037

Note:

^aAnalysis of bivariate logistic regression.

Abbreviations: ΔIC, increases in inspiratory capacity; ΔFEV₁, increases in forced expiratory volume in 1 second; OR, odds ratio; CI, confidence interval; ΔmMRC, decline in the modified Medical Research Council scores.