To what extent do dietary costs explain socio-economic differences in dietary behavior?

Nutrition Journal

Table 3 Results regarding the mediating role of dietary cost in the association between individual and household educational level and the DHD15-index and DASH score for participants within varying age groups

Independent variable	Mediator	Dependent variable	≤ 65 years^a			> 65 years^b
			Indirect effect		Proportion mediated	Indirect effect		Proportion mediated
			β	Bootstrap 95%CI	Proportion mediated	β	Bootstrap 95%CI	Proportion mediated
	Dietary cost (€/d)	DHD15- index (score)	Individual educational level
Middle vs. low			0.07	−0.03; 0.20	N/A	0.25*	0.13; 0.40	6.9
High vs. low			0.07	−0.03; 0.20	N/A	0.27*	0.15; 0.41	3.3
High vs. Middle			0.01	−0.05; 0.07	N/A	0.02	−0.07; 0.11	N/A
			Household educational level
Middle vs. low			0.04	−0.04; 0.15	N/A	0.18*	0.08; 0.30	6.3
High vs. low			0.07	−0.07; 0.22	N/A	0.27*	0.15; 0.40	3.7
High vs. Middle			0.03	−0.03; 0.13	N/A	0.09*	0.02; 0.19	2.1
		DASH diet (score)	Individual educational level
Middle vs. low			0.04*	0.01; 0.08	3.2	0.09*	0.06; 0.14	10.5
High vs. low			0.04*	0.01; 0.08	1.5	0.10*	0.07; 0.14	5.0
High vs. Middle			0.00	−0.03; 0.03	N/A	0.01	−0.02; 0.04	N/A
			Household educational level
Middle vs. low			0.02	−0.00; 0.06	N/A	0.07*	0.03; 0.10	10.0
High vs. low			0.05*	0.01; 0.09	1.9	0.10*	0.06; 0.14	5.8
High vs. Middle			0.02	−0.00; 0.06	N/A	0.03*	0.01; 0.07	2.9

Abbreviations: B beta regression, CI confidence interval, N/A Not Applicable
^aN = 2413 and N = 2418 for individual and household educational level, respectively
^bN = 6862 and N = 6864 for individual and household educational level, respectively
* P < 0•05
All analyses were adjusted for energy intake, study center and sex.
Proportion mediated was not calculated for non-significant indirect effects.

ISSN: 1475-2891