Table 3. Multivariate logistic regression model for the predictors of mMRC and CAT score improvements over their MCID after a 3-month treatment.

Characteristics	mMRC change (≥−1)			CAT change (≥−2)
	Odds ratio	P value		Odds ratio	P value
Age	0.944	0.256		1.006	0.857
BMI	0.916	0.510		0.989	0.906
Smoking pack-years	1.025	0.141		0.988	0.308
Current smoking status (current vs. ex-smoker)	0.780	0.757		0.930	0.893
FEV1 (% predicted)	0.992	0.769		1.008	0.666
DLco (% predicted)	1.043	0.028		1.003	0.819
IC/TLC (%)	1.013	0.709		1.012	0.596
mMRC dyspnea scale	17.747	<0.001		1.259	0.493
CAT score	0.860	0.058		1.152	0.009

mMRC, Modified Medical Research Council; CAT, COPD Assessment Test; MCID, minimal clinically significant differences; BMI, body mass index; FEV₁, forced expiratory volume in 1 second; DLco, diffusing capacity for carbon monoxide; IC, inspiratory capacity; TLC, total lung capacity.