Table 2.

Association between overall dietary quality and constipation

Variables	Model 1		Mode 2		Model 3
	OR (95%CI)	P	OR (95%CI)	P	OR (95%CI)	P
HEI score	0.98 (0.98–0.99)	< 0.001	0.98 (0.98–0.99)	< 0.001	0.98 (0.98–0.99)	< 0.001

Abbreviation: OR, odds ratio; CI, confidence interval; HEI, healthy eating index

Model 1, unadjusted model;

Model 2, adjusted for age and gender;

Model 3, adjusted for age, gender, race, education level, marital status, family income, BMI, drinking, smoking, vigorous physical activity, moderate physical activity, hypertension, depression, total energy intake, dietary supplements, and calcium supplement