Table 4.

Association between overall dietary quality and constipation in participants with different gender and age

	Variables	Model
		OR (95%CI)	P
Gender a
Male	HEI score	0.98 (0.97–0.99)	0.007
Female	HEI score	0.98 (0.98–0.99)	< 0.001
Gender * HEI score			0.930
Age b
≥ 65 years	HEI score	0.98 (0.98–0.99)	< 0.001
< 65 years	HEI score	0.98 (0.98–0.99)	< 0.001
Age * HEI score			0.829

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

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

Model ^b, adjusted for 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