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Table 3 Association between daily dietary costs in tertiles and (high) dietary quality, by level of education (n = 4717)

From: Socioeconomic and ethnic differences in the relation between dietary costs and dietary quality: the HELIUS study

Dietary quality (DHD15-index – continuous score) Lowest educated (n = 1682) Medium educated (n = 1343) Highest educated (n = 1692)
β 95% CI β 95% CI β 95% CI
Dietary costs T1 (1,14-4,56€) ref   ref   ref  
T2 (4,57-5,58€) 6.55** 4.63; 8.47 6.91** 1.35; 5.26 6.59** 4.63; 8.56
T3 (5,59-17,15€) 5.09** 2.74; 7.44 6.96** 3.49; 8.06 8.06** 5.63; 10.48
High dietary quality (DHD15-index – dichotomous) OR 95%CI OR 95%CI OR 95%CI
Dietary costs T1 (1,14-4,56€) ref   ref   ref  
T2 (4,57-5,58€) 2.79** 2.00; 3.94 2.30** 1.54; 3.43 2.88** 1.96; 4.25
T3 (5,59-17,15€) 2.37** 1.54; 3.65 2.10* 1.27; 3.48 3.72** 2.35; 5.90
  1. High dietary quality was defined as the top quintile
  2. All models adjust for age, sex, ethnicity, smoking, energy intake and physical activity
  3. DHD15-index Dutch Healthy Diet index 2015, T Tertile, Ref reference group, CI Confidence Interval
  4. *P < 0.05; **P < 0.001