Research Explorer

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Researcher

Willem De Keyzer

Awards & Distinctions

52 Results

2020

Mycotoxin exposure assessments in a multi-center European validation study by 24-hour dietary recall and biological fluid sampling

Karl De RuyckInge HuybrechtsShupeng YangDavide ArcellaLiesel ClaeysSouheila AbbeddouWillem De KeyzerJeanne De VriesMarga OckeJiri Ruprich et al.

A1 Journal Article in ENVIRONMENT INTERNATIONAL

2017

Perspective: An extension of the STROBE Statement for Observational Studies in Nutritional Epidemiology (STROBE-nut) : explanation and elaboration

Agneta HörnellChristina BergElisabet ForsumChristel LarssonEmily SonestedtAgneta ÅkessonCarl LachatDana HawwashPatrick KolsterenGraham Byrnes et al.

A1 Journal Article in ADVANCES IN NUTRITION

2016

Comparison of different approaches to calculate nutrient intakes based upon 24‑h recall data derived from a multicenter study in European adolescents

Cristina Julián-AlmárceguiSilvia Bel-SerratMathilde KerstingGerman Vicente-RodriguezGenevieve NicolasKrishna VynckeCarine VereeckenWillem De KeyzerLaurent BeghinStefania Sette et al.

A1 Journal Article in EUROPEAN JOURNAL OF NUTRITION

Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement

Carl LachatDana HawwashMarga C OckéChristina BergElisabet ForsumAgneta HörnelChristel LarssonEmily SonestedtElisabet WirfältAgneta Åkesson et al.

A1 Journal Article in PLOS MEDICINE

Strengthening the Reporting of Observational Studies in Epidemiology-nutritional epidemiology (STROBE-nut) : an extension of the STROBE statement

Carl LachatDana HawwashMarga C OckéChristina BergElisabet ForsumAgneta HörnellChristel I LarssonEmily SonestedtElisabet WirfältAgneta Åkesson et al.

A2 Journal Article in NUTRITION BULLETIN

2015

Cross-continental comparison of national food consumption survey methods : a narrative review

Willem De KeyzerTatiana BrackeSarah A McNaughtonWinsome ParnellAlanna J MoshfeghRosangela A PereiraHaeng-Shin LeePieter van't VeerStefaan De HenauwInge Huybrechts

A1 Journal Article in NUTRIENTS

Effect of sodium restriction on blood pressure of unstable or uncontrolled hypertensive patients in primary care

Willem De KeyzerKatrien TillemanJan AmpeStefaan De HenauwInge Huybrechts

A1 Journal Article in NUTRITION RESEARCH AND PRACTICE

Reporting accuracy of population dietary sodium intake using duplicate 24 h dietary recalls and a salt questionnaire

Willem De KeyzerMarcela DofkováInger Therese L LillegaardMieke De MaeyerLene Frost AndersenJirí RuprichIrena ŘehůřkováAnouk GeelenPieter van 't VeerStefaan De Henauw et al.

A1 Journal Article in BRITISH JOURNAL OF NUTRITION

2014

Comparison of nutritional quality of the vegan, vegetarian, semi-vegetarian, pesco-vegetarian and omnivorous diet

Peter ClarysTom DeliensInge HuybrechtsPeter DeriemaekerBarbara VanaelstWillem De KeyzerMarcel HebbelinckPatrick Mullie

A1 Journal Article in NUTRIENTS

Methodological aspects of dietary intake assessment in food consumption surveys : from a national to an international level

Willem De KeyzerStefaan De HenauwPieter van 't Veer

2013

Relative validity of a short qualitative food frequency questionnaire for use in food consumption surveys

Willem De KeyzerArnold DekkersVeerle Van VlaslaerCharlene OttevaereHerman Van OyenStefaan De HenauwInge Huybrechts

A1 Journal Article in EUROPEAN JOURNAL OF PUBLIC HEALTH

Validation of the Diet Quality Index for Adolescents by comparison with biomarkers, nutrient and food intakes: the HELENA study

Krishna VynckeEstefania Cruz FernandezMarta Fajó-PascualMagdalena Cuenca-GarcíaWillem De KeyzerMarcela Gonzalez-GrossLuis A MorenoLaurent BeghinChristina BreidenasselMathilde Kersting et al.

A1 Journal Article in BRITISH JOURNAL OF NUTRITION

2012

Food sources and correlates of sodium and potassium intakes in Flemish pre-school children

Inge HuybrechtsWillem De KeyzerYi LinStefanie VandevijvereCarine VereeckenHerman Van OyenKatrien TillemanMia BellemansMieke De MaeyerGui De Backer et al.

A1 Journal Article in PUBLIC HEALTH NUTRITION

Intake and dietary sources of haem and non-haem iron in Flemish preschoolers

Inge HuybrechtsYi LinWillem De KeyzerChristophe MatthysL HarveyA MeirhaegheJ DallongevilleB SarriaGui De BackerStefaan De Henauw

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

Nutritional quality and acceptability of a weekly vegetarian lunch in primary-school canteens in Ghent, Belgium: 'Thursday Veggie Day'

Willem De KeyzerSven Van CaneghemAnne-Louise M HeathBarbara VanaelstMia VerschraegenStefaan De HenauwInge Huybrechts

A1 Journal Article in PUBLIC HEALTH NUTRITION

Predicting urinary creatinine excretion and its usefulness to identify incomplete 24 h urine collections

Willem De KeyzerInge HuybrechtsArnold LM DekkersAnouk GeelenSandra CrispimPaul JM HulshofLene F AndersenIrena ŘehůřkováJiří RuprichJean-Luc Volatier et al.

A1 Journal Article in BRITISH JOURNAL OF NUTRITION

2011

Biomarker-based evaluation of two 24-h recalls for comparing usual fish, fruit and vegetable intakes across European centers in the EFCOVAL Study

SP CrispimA GeelenOW SouvereinPJM HulshofJ RuprichM DofkovaInge HuybrechtsWillem De KeyzerIT LillegaardLF Andersen et al.

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

De effectiviteit van inname van omega-3-vetzuren in de behandeling van ADHD: een literatuuronderzoek

Els Van den WyngaertDieter BaeyensLotte Van DyckWillem De Keyzer

A4 Journal Article in SIGNAAL

Dietary sources and socio-demographic and economic factors affecting vitamin D and calcium intakes in preschoolers

Inge HuybrechtsYi LinWillem De KeyzerIsabelle SioenT MouratidouLouis MorenoNadia SlimaniMazda JenabStefanie VandevijvereGui De Backer et al.

Dietary sources and sociodemographic and economic factors affecting vitamin D and calcium intakes in Flemish preschoolers

Inge HuybrechtsYi LinWillem De KeyzerIsabelle SioenT MouratidouLA MorenoN SlimaniM JenabS VandevijvereGui De Backer et al.

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

Dietary sources of fiber intake and its association with socio-economic factors among Flemish preschool children

Yi LinSelin BolcaStefanie VandevijvereWillem De KeyzerHerman Van OyenJohn Van CampGui De BackerStefaan De HenauwInge Huybrechts

A1 Journal Article in INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

Evaluation of diet quality indices for European adolescents: the HELENA study

Inge HuybrechtsEstefania Cruz-FernandezKrishna VynckeT MouratidouM KerstingM Gonzales-GrossWillem De KeyzerTineke DevriendtCarine VereeckenEva Grammatikaki

Fibre intake among the Belgian population by sex-age and sex-education groups and its association with BMI and waist circumference

Yi LinInge HuybrechtsStefanie VandevijvereSelin BolcaWillem De KeyzerStephanie De VrieseAnja PoletMelissa De NeveHerman Van OyenJohn Van Camp et al.

A1 Journal Article in BRITISH JOURNAL OF NUTRITION

Food photographs in nutritional surveillance: errors in portion size estimation using drawings of bread and photographs of margarine and beverages consumption

Willem De KeyzerInge HuybrechtsMieke De MaeyerMarga OckéNadia SlimaniPieter van 't VeerStefaan De Henauw

A1 Journal Article in BRITISH JOURNAL OF NUTRITION

Inventory of experiences from national/regional dietary monitoring surveys using EPIC-Soft

Inge HuybrechtsC CasagrandeG NicolasA GeelenSP CrispimWillem De KeyzerH FreislingStefaan De HenauwMieke De MaeyerC Krems et al.

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

Kwaliteitsevaluatie van Donderdag Veggiedag op de Gentse stadsscholen

Sven Van CaneghemWillem De KeyzerMia VerschraegenInge Huybrechts

A4 Journal Article in TIJDSCHRIFT VOOR VOEDING EN DIETETIEK

Portiegroottes schatten aan de hand van afbeeldingen

Willem De KeyzerInge HuybrechtsStefaan De Henauw

A4 Journal Article in VOEDING NU

Potential and requirements for a standardized pan-European food consumption survey using the EPIC-Soft software

MC OckéN SlimaniH BrantsE Buurma-RethansC CasagrandeG NicolasM DofkovaC le DonneH FreislingA Geelen et al.

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

Potential and requirements for a standardized pan-European food consumption survey using the epic-soft 24-h recalls

Marga OckéNadia SlimaniH BrantsE BuurmaCorinne CasagrandeG NicolasMarcela DofkovaC le DonneHeinz FreislingAnouk Geelen et al.

Relative validity of a short qualitative food frequency questionnaire for national food consumption surveys

Willem De KeyzerInge HuybrechtsArnold DekkersMia VerschraegenVeerle Van VlaslaerCharlene OttevaereHerman Van OyenStefaan De Henauw

Repeated 24-hour recalls versus dietary records for estimating nutrient intakes in a national food consumption survey

Willem De KeyzerInge HuybrechtsVeerle De VriendtStefanie VandevijvereNadia SlimaniHerman Van OyenStefaan De Henauw

A1 Journal Article in FOOD AND NUTRITION RESEARCH

Respondents' evaluation of the 24-h dietary recall method (EPIC-Soft) in the EFCOVAL project

Inge HuybrechtsA GeelenJH de VriesC CasagrandeG NicolasWillem De KeyzerIT LillegaardJ RuprichL LafayEC Wilson-van den Hooven et al.

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

Student nurses perceptions on hand hygiene: analysis of behavioral and environmental determinants

David De WandelSonia LabeauWillem De KeyzerDirk VogelaersStijn Blot

Student nurses perceptions on hand hygiene: analysis of behavioral and environmental determinants

David De WandelDirk VogelaersStijn BlotSonia LabeauWillem De Keyzer

Two non-consecutive 24 h recalls using EPIC-Soft software are sufficiently valid for comparing protein and potassium intake between five European centres: results from the European Food Consumption Validation (EFCOVAL) study

Sandra P CrispimJeanne HM de VriesAnouk GeelenOlga W SouvereinPaul JM HulshofLionel LafayAnne-Sophie RousseauInger TL LillegaardLene F AndersenInge Huybrechts et al.

A1 Journal Article in BRITISH JOURNAL OF NUTRITION

Validity of parent-reported weight and height of preschool children measured at home or estimated without home measurement : a validation study

Inge HuybrechtsJohn H HimesCharlene OttevaereTineke De VriendtWillem De KeyzerBianca CoxInge Van TrimpontDirk De BacquerStefaan De Henauw

A1 Journal Article in BMC PEDIATRICS

2010

Belgian city goes vegetarian on Thursday

Sven Van CaneghemInge HuybrechtsWillem De KeyzerMia Verschraegen

Estimate of total salt intake in two regions of Belgium through analysis of sodium in 24-h urine samples

Stefanie VandevijvereWillem De KeyzerJ-P ChapelleD JeanneG MouilletInge HuybrechtsPaul HulshofHerman Van Oyen

A1 Journal Article in EUROPEAN JOURNAL OF CLINICAL NUTRITION

Food photographs in nutritional surveillance: errors in portion size estimation using drawings of bread and photographs of margarine and beverages consumption

Willem De KeyzerInge HuybrechtsMieke De MaeyerMarga OckéNadia SlimaniPieter van 't VeerStefaan De Henauw

High dietary supplement intakes among Flemish preschoolers

Inge HuybrechtsLea MaesCarine VereeckenWillem De KeyzerDirk De BacquerGui De BackerStefaan De Henauw

A1 Journal Article in APPETITE

The clinical learning environment and supervision instrument (CLES): validity and reliability of the Dutch version (CLES+NL)

Nico De WitteSonia LabeauWillem De Keyzer

A1 Journal Article in INTERNATIONAL JOURNAL OF NURSING STUDIES

Update praktische gids voor behandeling obesitas in België

Willem De KeyzerInge Huybrechts

Urinary creatinine as a biomarker in nutritional and epidemiological studies

Willem De KeyzerInge HuybrechtsSandra CrispimAnouk GeelenArnold DekkersEvelien de BoerStefaan De Henauw

2009

Caregivers’ capability of detecting malnutrition in elderly residents

Willem De KeyzerV BralNico De Witte

How well do caregivers detect malnutrition in elderly residents

Willem De KeyzerNico De Witte

Relative validity of repeated 24h recalls using EPIC-Soft for estimating nutrient intakes among the Belgian population

Willem De KeyzerInge HuybrechtsStefaan De Henauw

Validity of a computerized two-day 24-h recall (EPIC-Soft) against independent biomarkers for comparisons of intake between five European countries - preliminary results from the European Food Consumption Validation (EFCOVAL)

SP CrispimJHM VriesA GeelenPJM HulshofIT LillegaardAS RousseauWillem De KeyzerI RehurkovM OckéN Slimani et al.

Validity of the assessment of potassium and fish intake by a computerized two-day 24-h recall (EPIC-Soft) in five European countries - preliminary results from the European Food Consumption Validation (EFCOVAL)

SP CrispimJHM VriesA GeelenPJM HulshofIT LillegaardAs RousseauWillem De KeyzerI RehurkovM OckéN Slimani et al.

2007

Validity and reproducibility of an adolescent Web-based food frequency questionnaire

Christophe MatthysIlse PynaertWillem De KeyzerStefaan De Henauw

A1 Journal Article in JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION

2006

An adolescent web-based food frequency questionnaire: validity and reproducibility

Christophe MatthysIlse PynaertWillem De KeyzerStefaan De Henauw

Heeft de huidige diëtistenpraktijk nood aan geïntegreerde software?

Nele CallewaertWillem De KeyzerMia Verschraegen

A4 Journal Article in TIJDSCHRIFT VOOR VOEDING EN DIETETIEK

Prikkelbaar darmsyndroom, irritable bowel syndrome, spastisch colon

Willem De Keyzer

A4 Journal Article in TIJDSCHRIFT VOOR VOEDING EN DIETETIEK