. 2019 Mar 28;18:21. doi: 10.1186/s12937-019-0445-3

Table 2.

Association between daily dietary costs in tertiles and (high) dietary quality (n = 4717)

Dietary quality (DHD15-index – continuous score)		Model 1 ^a		Model 2 ^b
Dietary quality (DHD15-index – continuous score)		β	95% CI	β	95% CI
Dietary costs	T1 (1,14-4,56€)	ref		ref
	T2 (4,57-5,58€)	6.54^**	5.29; 7.80	6.69^**	5.52; 7.86
	T3 (5,59-17,15€)	7.13^**	5.59; 8.67	6.70^**	5.25; 8.15
High dietary quality (DHD15-index – dichotomous)		Model 1 ^a		Model 2 ^b
High dietary quality (DHD15-index – dichotomous)		OR	95% CI	OR	95% CI
Dietary costs	T1 (1,14-4,56€)	ref		ref
	T2 (4,57-5,58€)	2.16^**	1.77; 2.63	2.60^**	2.10; 3.22
	T3 (5,59-17,15€)	2.24^**	1.76; 2.86	2.64^**	2.02; 3.44

High dietary quality was defined as the top quintile

DHD15-index Dutch Healthy Diet index 2015, T Tertile, Ref reference group, CI Confidence Interval, OR Odds ratio

^*P < 0.05; ^**P < 0.001

^a Model 1 is only adjusted for dietary energy | ^b Model 2 additionally adjusts for age, sex, education, ethnicity, smoking and physical activity