Table 4.

Multivariate Logistic Regression Model of COPD

Factors	Regression Coefficient	Standard Error	WALD	P	OR (95% CI)
Constant term	−0.263	0.658	−0.400	0.689	0.77
Age	0.031	0.005	6.709	<0.001	1.03 (1.02,1.04)
Gender	−0.133	0.12	−1.106	0.269	0.88 (0.69,1.11)
Physical activity outside work	0.377	0.082	4.585	<0.001	1.46 (1.24,1.71)
Kitchen ventilation	0.269	0.144	1.875	0.061	1.31 (0.98,1.73)
Cooking methods	0.204	0.116	1.754	0.079	1.23 (0.98,1.54)
Smoking	0.582	0.147	3.972	<0.001	1.79 (1.34,2.38)
Daily intake of fruits and vegetables	−0.361	0.167	−2.163	0.031	0.70 (0.51,0.97)
BMI	−0.098	0.017	−5.646	<0.001	0.91 (0.88,0.94)
Waist circumference	0.024	0.007	3.285	0.001	1.02 (1.01,1.04)
Hip circumference	−0.034	0.007	−4.601	<0.001	0.97 (0.95,0.98)
Systolic pressure	0.005	0.002	2.388	0.017	1.01 (1.00,1.01)