title: The Dutch Healthy Diet index as assessed by 24 h recalls and FFQ: associations with biomarkers from a cross-sectional study.
abstract: The Dutch Healthy Diet index (DHD-index) was developed using data from two 24 h recalls (24hR) and appeared useful to evaluate diet quality in Dutch adults. As many epidemiologic studies use FFQ, we now estimated the DHD-index score using FFQ data. We compared whether this score showed similar associations with participants' characteristics, micronutrient intakes, and biomarkers of intake and metabolism compared with the DHD-index using 24hR data. Data of 121 Dutch participants of the European Food Consumption Validation study were used. Dietary intake was assessed by two 24hR and a 180-item FFQ. Biomarkers measured were serum total cholesterol and carotenoids, EPA + DHA in plasma phospholipids and 24 h urinary Na. A correlation of 0·48 (95 % CI 0·33, 0·61) was observed between the DHD-index score based on 24hR data and on FFQ data. Classification of participants into the same tertiles of the DHD-index was achieved for 57 %. Women showed higher DHD-index scores. Energy intake was inversely associated with both DHD-index scores. Furthermore, age and intakes of folate, Fe, Mg, K, vitamin B6 and vitamin C were positively associated with both DHD-index scores. DHD-index scores showed acceptable correlations with the four combined biomarkers taking energy intake into account (r 24hR 0.55; r FFQ 0.51). In conclusion, the DHD-index score based on FFQ data shows similar associations with participants' characteristics, energy intake, micronutrient intake and biomarkers compared with the score based on 24hR data. Furthermore, ranking of participants was acceptable for both methods. FFQ data may therefore be used to assess diet quality using the DHD-index in Dutch populations.
authors.affiliation: Division of Human Nutrition , Wageningen University , PO Box 8129, 6700 EV Wageningen , The Netherlands.
authors.forename: Linde
authors.initials: L
authors.lastname: van Lee
authors.affiliation: Division of Human Nutrition , Wageningen University , PO Box 8129, 6700 EV Wageningen , The Netherlands.
authors.forename: Edith J M
authors.initials: EJ
authors.lastname: Feskens
authors.affiliation: Division of Human Nutrition , Wageningen University , PO Box 8129, 6700 EV Wageningen , The Netherlands.
authors.forename: Eveline J C
authors.initials: EJ
authors.lastname: Hooft van Huysduynen
authors.affiliation: Division of Human Nutrition , Wageningen University , PO Box 8129, 6700 EV Wageningen , The Netherlands.
authors.forename: Jeanne H M
authors.initials: JH
authors.lastname: de Vries
authors.affiliation: Division of Human Nutrition , Wageningen University , PO Box 8129, 6700 EV Wageningen , The Netherlands.
authors.forename: Pieter
authors.initials: P
authors.lastname: van 't Veer
authors.affiliation: Division of Human Nutrition , Wageningen University , PO Box 8129, 6700 EV Wageningen , The Netherlands.
authors.forename: Anouk
authors.initials: A
authors.lastname: Geelen
keywords: 24hR, 24 h recall; ADF, acidic drink and food; Biomarkers; DHD-index, Dutch Healthy Diet index; DNFCS-2003, Dutch National Food Consumption Survey of 2003; Dietary assessment methods; Dietary patterns; Dutch Healthy Diet index; EFCOVAL, European Food Consumption Validation; TFA, trans-fatty acid