Reproducibility and validity of the Toronto-modified Harvard food frequency questionnaire in a multi-ethnic sample of young adults

Nielsen, Daiva E.; Boucher, Beatrice A.; Costa, Laura A. Da; Jenkins, David; El-Sohemy, Ahmed

doi:10.1038/s41430-022-01209-z

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…Changes in dietary behaviours will be assessed by a dietary behaviour questionnaire, which was adapted from previous food frequency questionnaires (FFQ). 46 47 The questionnaire includes questions on the intake and frequency of consumption of different categories of foods, particularly high-fat foods.…”

Section: Discussionmentioning

confidence: 99%

Lipid-focused dietary education intervention in pregnant women: study protocol for an open-label, parallel, randomised, intervention study addressing adverse pregnancy outcomes in China

Zhang,

Gao,

Zhu

et al. 2024

BMJ Open

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IntroductionThe incidence of infants who are large-for-gestational-age (LGA) is on the rise in China, and its detrimental effects on health have received increasing attention. Diet-based interventions have the potential to reduce adverse birth outcomes, particularly in decreasing the occurrence of LGA infants. We aim to evaluate the effect of lipid-focused diet education based on the theories of behaviour change in pregnant women on maternal and offspring outcomes through a randomised controlled trial.Methods and analysisWe have designed an open-label, parallel, multicentre randomised controlled trial in collaboration with three hospitals in Beijing, China.Pregnant women will be recruited before reaching 12 weeks of gestation and will be randomised in a 1:1:1 ratio into three arms: (1) online education arm, (2) pregnancy nutrition checklist and ‘one-page flyer’ arm and (3) routine antenatal education. The primary outcome LGA will be recorded at birth. Demographic information, physical activity, sleep and medical history will be collected through questionnaires and case cards prior to enrolment. Questionnaires will also be used to collect dietary behaviours and psychosocial factors of pregnant women at enrolment, at 24–28 weeks and 34–36 weeks of gestation. Additionally, information on breastfeeding and complementary food supplementation for infants and young children will be obtained through questionnaires. Physical development indicators of children and taste tests will be assessed 3 years after delivery.Ethics and disseminationThe study has received ethical approval from the Capital Medical University Ethics Committee and other collaborating study centres. Informed consent will be introduced to pregnant women, and their consent will be obtained. The findings will be reported in relevant national and international academic conferences and peer-reviewed publications.Trial registration numberChiCTR2300071126.

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Section: Discussionmentioning

confidence: 99%

Lipid-focused dietary education intervention in pregnant women: study protocol for an open-label, parallel, randomised, intervention study addressing adverse pregnancy outcomes in China

Zhang,

Gao,

Zhu

et al. 2024

BMJ Open

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“…According to previous research, the proposed sample size for the present study was sufficient to detect the correlation between dietary intakes assessed with the FFQ and dietary records for validation purposes [ 15 ]. The design of the present validation study was planned with reference to several similar studies [ 16 , 17 , 18 ]. Participants were considered eligible if they fulfilled the following criteria: (i) Hong Kong Chinese citizen; (ii) permanent resident in Hong Kong; (iii) aged 50–79 (this range referred to previous studies conducted among older adults in China [ 19 , 20 , 21 ]); (iv) able to speak and understand Chinese; (v) willing to follow the study procedures.…”

Section: Methodsmentioning

confidence: 99%

Reproducibility and Relative Validity of a Short Food Frequency Questionnaire for Chinese Older Adults in Hong Kong

Chan,

Zhou,

et al. 2024

Nutrients

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Changes in an individual’s digestive system, hormones, senses of smell and taste, and energy requirement accompanying aging could lead to impaired appetite, but older adults may not notice their risk of nutrient deficiency. When assessing the dietary intake of older adults, it was found that they had more difficulties with short-term recall and open-ended recall and would experience greater fatigue and frustration when compared to younger individuals when completing a lengthy questionnaire. There is a need to develop a brief dietary assessment tool to examine the nutritional needs of older adults. In this study, we aimed to assess the diet of Hong Kong older adults using the short FFQ and examine its reproducibility and relative validity as a dietary assessment tool. Dietary data of 198 older adults were collected via FFQs and three-day dietary records. Correlation analyses, cross-tabulation, one-sample t-tests, and linear regression analyses were used to evaluate the relative validity of the short FFQ. In general, the short FFQ was accurate in assessing the intake of phosphorus, water, grains, and wine, as shown by a significant correlation (>0.7) between values reported in the FFQs and dietary records; good agreement (more than 50% of observations belonged to the same quartile) and insignificant differences detected with the one-sample t-tests and linear regression analyses were observed for the above four variables. Additionally, the intake of proteins, carbohydrates, total fat, magnesium, and eggs in terms of the values reported in the FFQs and dietary records showed good agreement.

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“…Participants completed a general health and lifestyle questionnaire (GHLQ) and a validated Toronto‐modified Willett food frequency questionnaire (FFQ) at a single timepoint (Brenner et al, 2011; Nielsen et al, 2023). Modifications to the FFQ improved the assessment of dietary components such as whole grains, fruits, and vegetables.…”

Section: Methodsmentioning

confidence: 99%

Dietary and plasma retinoids are not associated with fatty acid desaturase indices in healthy young adults

Hatherell,

Abdelmagid,

et al. 2023

Lipids

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Past research in rodents suggests that fatty acid (FA) desaturase expression and activity may be modified by vitamin A; however, this has not been investigated in humans. The primary objective of this study was to examine associations between dietary retinoid intakes, plasma retinoid concentrations, and FA desaturase indices in young adults. As a secondary objective, biological sex and estrogen‐containing contraceptive (EC) use were investigated due to prior evidence demonstrating that both can influence plasma retinol concentration and FA desaturase indices. Dietary retinoid intake (food frequency questionnaire), plasma retinoid concentrations (high‐performance liquid chromatography–tandem mass spectrometry), plasma FA (gas chromatography), and FA desaturase indices (product‐to‐precursor ratios) from 945 adults recruited for the cross‐sectional Toronto Nutrigenomics and Health study were analyzed. Participants were stratified into quartiles based on plasma retinol concentration and data analyzed by one‐way analysis of covariance. Dietary retinoid intakes were not associated with the overall n‐3 pathway, overall n‐6 pathway, delta‐5 desaturase, delta‐6 desaturase, or delta‐9 desaturase indices (all r < 0.10, p > 0.05). The overall n‐6 pathway index was significantly higher (p = 0.0004) and the delta‐5 desaturase index was significantly lower (p = 0.0003) in individuals with higher plasma retinol levels; however, these differences were lost when participants were grouped by biological sex and EC use. Although weak relationships were observed between plasma retinol and some FA desaturase indices in the total population, these associations appear to be driven by biological sex and EC usage rather than retinoids. We therefore find little evidence of a relationship between retinoids and FA desaturase indices in young, healthy adults.

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Reproducibility and validity of the Toronto-modified Harvard food frequency questionnaire in a multi-ethnic sample of young adults

Cited by 5 publications

References 38 publications

Lipid-focused dietary education intervention in pregnant women: study protocol for an open-label, parallel, randomised, intervention study addressing adverse pregnancy outcomes in China

Lipid-focused dietary education intervention in pregnant women: study protocol for an open-label, parallel, randomised, intervention study addressing adverse pregnancy outcomes in China

Reproducibility and Relative Validity of a Short Food Frequency Questionnaire for Chinese Older Adults in Hong Kong

Dietary and plasma retinoids are not associated with fatty acid desaturase indices in healthy young adults

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