Table 3.

Weighted logistic regression analysis of the association between LCD score and COPD.

	Crude model OR (95%CI) p-value	Model 1 OR (95%CI) p-value	Model 2 OR (95%CI) p-value
LCD score	0.98 (0.97, 0.99) <0.001	0.98 (0.97, 0.99) <0.001	0.98 (0.96, 0.99) <0.001
LCD score quartile
Low	Ref.	Ref.	Ref.
Lower Middle	0.78 (0.63, 0.96) 0.020	0.78 (0.63, 0.96) 0.018	0.77 (0.63, 0.95) 0.015
Upper Middle	0.75 (0.59, 0.94) 0.012	0.74 (0.59, 0.93) 0.009	0.74 (0.59, 0.93) 0.010
High	0.63 (0.50, 0.80) <0.001	0.63 (0.50, 0.79) <0.001	0.61 (0.48, 0.78) <0.001
P for trend	<0.001	<0.001	<0.001

Data are presented as OR (95% CI). Crude model: Did not adjust for any potential confounders; Model 1: Adjusted for age, sex, race/ethnicity, educational level, marital status, PIR; Model 2: Adjusted for age, sex, race/ethnicity, PIR, marital status, educational level, BMI, waist circumference, WHtR, physical activity, smoking status, hypertension, diabetes, congestive heart failure, coronary heart disease, heart disease, stroke, magnesium intake, calcium intake, vitamin D intake; Quantiles: Low (1st quantile), Lower Middle (2nd quantile), Upper Middle (3rd quantile), High (4th quantile).