Association of dietary calcium intake with chronic bronchitis and emphysema

Table 5 Multivariate weighted regression analysis of association between dietary calcium intake and airflow obstruction

Model	Dietary calcium intake (mg/day)	OR	95% CI	P-Value
Unadjusted model	≤ 543	1.0 (Reference)	1.0 (Reference)
	544–829	0.923	0.922–0.924	< 0.001
	830–1199	0.785	0.785–0.786	< 0.001
	> 1200	0.743	0.742–0.743	< 0.001
Adjusted model 1^a	≤ 543	1.0 (Reference)	1.0 (Reference)
	544–829	0.836	0.835–0.836	< 0.001
	830–1199	0.827	0.827–0.828	< 0.001
	> 1200	0.898	0.897–0.899	< 0.001
Adjusted model 2^b	≤ 543	1.0 (Reference)	1.0 (Reference)
	544–829	0.928	0.927–0.929	< 0.001
	830–1199	0.862	0.862–0.863	< 0.001
	> 1200	0.881	0.880–0.882	< 0.001
Adjusted model 3^c	≤ 543	1.0 (Reference)	1.0 (Reference)
	544–829	0.929	0.928–0.930	< 0.001
	830–1199	0.863	0.863–0.864	< 0.001
	> 1200	0.882	0.881–0.882	< 0.001
Adjusted model 4^d	≤ 543	1.0 (Reference)	1.0 (Reference)
	544–829	0.921	0.921–0.922	< 0.001
	830–1199	0.791	0.790–0.792	< 0.001
	> 1200	0.812	0.812–0.813	< 0.001

^a Adjusted for age and gender
^b Adjusted for age, gender, race and education
^c Adjusted for age, gender, race, education, ratio of family income to poverty and marital status
^d Adjusted for age, gender, race, education, ratio of family income to poverty, marital status, BMI, smoking, dietary energy and dietary protein intake
OR, odds ratio; CI, confidence interval

ISSN: 2072-1315