Table 2.

Binary logistic regression analysis of COPD.

Variables	β	Standard error	Wald X2	OR	95%CI	P value
TDR	0.079	0.037	4.478	1.082	1.006–1.165	.034
%LAA−950	0.172	0.087	3.937	1.187	1.002–1.407	.047

COPD = chronic obstructive pulmonary disease, %LAA₋₉₅₀ = percentage of low attenuation areas less than −950 Hounsfield units, TDR = thickness–diameter ratio.