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Oliveira JM, Silva ACFD, Moraes MMD, Cardoso LDO, Castro IRRD. Relative validity and reproducibility of WHO indicators for assessment of feeding practices in children under two years of age. CIENCIA & SAUDE COLETIVA 2023; 28:1073-1086. [PMID: 37042889 DOI: 10.1590/1413-81232023284.13792022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 12/01/2022] [Indexed: 04/13/2023] Open
Abstract
The study aimed to evaluate relative validity and reproducibility of seven WHO indicators of dietary practices in children aged 6-23.9 months. Data from probabilistic sample of children who used primary healthcare services in Rio de Janeiro, Brazil were collected using a 24h dietary recall (24HR) and a closed questionnaire (Q1) on feeding in the day before the study. The last one was reapplied (Q2) around 16 days later. Validity was assessed by comparing the prevalence rates estimated by 24HR and Q1 and calculating the positive (PPV) and negative (NPV) predictive values, sensitivity (Se), specificity (Sp), and accuracy index (AI) for the resulting indicators. For reproducibility, estimated prevalence rates based on Q1 and Q2 were compared and the kappa index and prevalence-adjusted bias-adjusted kappa were estimated. Of the seven estimated indicators, the prevalence of two was overestimated (Continued breastfeeding: 50.0% vs 40.0%; Sweet beverage consumption: 65.1% vs 52.7%) and the prevalence of one was underestimated (Zero vegetable or fruit consumption: 6.5% vs 18.1%). For most indicators, Se and PPV were higher than Sp and NPV. The prevalence rates determined with Q1 and Q2 were similar for 6 indicators. More than half showed good, very good or excellent agreement.
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Affiliation(s)
- Juliana Martins Oliveira
- Rio de Janeiro State University (UERJ). R. São Francisco Xavier 524, 12º andar, sala 12.001D. 20550-013 Rio de Janeiro RJ Brasil.
| | | | - Milena Miranda de Moraes
- Rio de Janeiro State University (UERJ). R. São Francisco Xavier 524, 12º andar, sala 12.001D. 20550-013 Rio de Janeiro RJ Brasil.
| | | | - Inês Rugani Ribeiro de Castro
- Rio de Janeiro State University (UERJ). R. São Francisco Xavier 524, 12º andar, sala 12.001D. 20550-013 Rio de Janeiro RJ Brasil.
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Evaluation of paper-based and web-based food frequency questionnaires for 7-year-old children in Singapore. Br J Nutr 2022; 128:1626-1637. [PMID: 34776027 DOI: 10.1017/s0007114521004517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Advances in technology enabled the development of a web-based, pictorial FFQ to collect parent-report dietary intakes of 7-year-old children in the Growing Up in Singapore Towards healthy Outcomes study. This study aimed to compare intakes estimated from a paper-FFQ and a web-FFQ and examine the relative validity of both FFQ against 3-d diet records (3DDR). Ninety-two mothers reported food intakes of their 7-year-old child on a paper-FFQ, a web-FFQ and a 3DDR. A usability questionnaire collected participants' feedback on the web-FFQ. Correlations and agreement in energy, nutrients and food groups intakes between the dietary assessments were evaluated using Pearson's correlation, Lin's concordance, Bland-Altman plots, Cohen's κ and tertile classification. The paper- and web-FFQ had good correlations (≥ 0·50) and acceptable-good agreement (Lin's concordance ≥ 0·30; Cohen's κ ≥ 0·41; ≥ 50 % correct and ≤ 10 % misclassification into same or extreme tertiles). Compared with 3DDR, both FFQ showed poor agreement (< 0·30) in assessing absolute intakes except micronutrients (web-FFQ had acceptable-good agreement), but showed acceptable-good ability to classify children into tertiles (κ ≥ 0·21; ≥ 40 % and ≤ 15 % correct or misclassification). Bland-Altman plots suggest good agreement between web-FFQ and 3DDR in assessing micronutrients and several food groups. The web-FFQ was well-received, and majority (81 %) preferred the web-FFQ over the paper-FFQ. The newly developed web-FFQ produced intake estimates comparable to the paper-FFQ, has acceptable-good agreement with 3DDR in assessing absolute micronutrients intakes and has acceptable-good ability to classify children according to categories of intakes. The positive acceptance of the web-FFQ makes it a feasible tool for future dietary data collection.
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de Quadros VP, Balcerzak A, Allemand P, de Sousa RF, Bevere T, Arsenault J, Deitchler M, Holmes BA. Global Trends in the Availability of Dietary Data in Low and Middle-Income Countries. Nutrients 2022; 14:2987. [PMID: 35889943 PMCID: PMC9324857 DOI: 10.3390/nu14142987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/06/2022] [Accepted: 07/12/2022] [Indexed: 02/05/2023] Open
Abstract
Individual-level quantitative dietary data can provide suitably disaggregated information to identify the needs of all population sub-groups, which can in turn inform agricultural, nutrition, food safety, and environmental policies and programs. The purpose of this discussion paper is to provide an overview of dietary surveys conducted in low- and middle-income countries (LMICs) from 1980 to 2019, analyzing their key characteristics to understand the trends in dietary data collection across time. The present study analyzes the information gathered by the Food and Agriculture Organization of the United Nations/World Health Organization Global Individual Food consumption data Tool (FAO/WHO GIFT). FAO/WHO GIFT is a growing repository of individual-level dietary data and contains information about dietary surveys from around the world, collected through published survey results, literature reviews, and direct contact with data owners. The analysis indicates an important increase in the number of dietary surveys conducted in LMICs in the past four decades and a notable increase in the number of national dietary surveys. It is hoped that this trend continues, together with associated efforts to validate and standardize the dietary methods used. The regular implementation of dietary surveys in LMICs is key to support evidence-based policies for improved nutrition.
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Affiliation(s)
- Victoria Padula de Quadros
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy; (A.B.); (P.A.); (R.F.d.S.); (T.B.); (B.A.H.)
| | - Agnieszka Balcerzak
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy; (A.B.); (P.A.); (R.F.d.S.); (T.B.); (B.A.H.)
| | - Pauline Allemand
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy; (A.B.); (P.A.); (R.F.d.S.); (T.B.); (B.A.H.)
| | - Rita Ferreira de Sousa
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy; (A.B.); (P.A.); (R.F.d.S.); (T.B.); (B.A.H.)
| | - Teresa Bevere
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy; (A.B.); (P.A.); (R.F.d.S.); (T.B.); (B.A.H.)
| | - Joanne Arsenault
- Intake—Center for Dietary Assessment, FHI Solutions, Washington, DC 20009, USA; (J.A.); (M.D.)
| | - Megan Deitchler
- Intake—Center for Dietary Assessment, FHI Solutions, Washington, DC 20009, USA; (J.A.); (M.D.)
| | - Bridget Anna Holmes
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy; (A.B.); (P.A.); (R.F.d.S.); (T.B.); (B.A.H.)
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Sun Y, Zhao J, Song X, Sun Z, Zhang R, Zhong J, Huang X, Dong Y, Yu Q, Dong F, Li Z, Fan L, Wang M, Peng C, Wang F. Effects of marginal zinc deficiency on learning and memory ability after birth. Food Funct 2022; 13:7204-7214. [PMID: 35713090 DOI: 10.1039/d2fo01074g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc deficiency during pregnancy and severe zinc deficiency after birth both impaired learning and memory ability, but the effects of marginal zinc deficiency (MZD) after birth on learning and memory are unclear. In the first experiment, 4-week-old male rats were randomly divided into three groups: the marginal zinc-deficient group (MZG, 10 mg kg-1, 1/3 RNI), normal zinc group (NZG, 30 mg kg-1, RNI), and paired zinc group (PZG, 30 mg kg-1). After a 4-week feeding period, the brain weight, brain coefficient, and serum zinc concentration were measured, and hippocampal proteomics analysis was performed. In the second experiment, 4-week-old male rats were fed the same diet for 8 weeks. In addition to the previously mentioned indicators, the Morris water maze results, brain pathology, post-translational modifications (PTMs) of hippocampal proteins, and the concentrations of indicators known to be related to learning and memory were analyzed. In both experiments, compared with those of the NZG, the food intake, body weight and serum zinc of the MZG were significantly decreased, and the brain weight was unchanged, but the brain coefficient was increased. Two hippocampal proteomics analyses and PTM screening showed that MZD did not change the expression and PTM of proteins. The brain pathology, learning, memory and the concentrations of indicators known to be related to learning and memory were not changed by MZD. Our study confirmed that marginal zinc deficiency (10 mg kg-1, 1/3 RNI) had no effect on the learning and memory abilities of rats after birth.
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Affiliation(s)
- Yongzhi Sun
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Jiali Zhao
- Yiwu Maternity and Children Hospital, Yiwu, Zhejiang, China
| | - Xinyu Song
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Zhaohui Sun
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Rui Zhang
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Jiayi Zhong
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Xiaocai Huang
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Yingran Dong
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Qingli Yu
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Feng Dong
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Zixiang Li
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Lina Fan
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Maoqing Wang
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Chenghai Peng
- Department of Cardiology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150081, China.
| | - Fan Wang
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China.
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Chen JJ, Tsai LY, Tsai JM, Hsu CY. Food Away From Home and Self-Perceived Gastrointestinal Health. Front Nutr 2021; 8:741647. [PMID: 34901106 PMCID: PMC8662982 DOI: 10.3389/fnut.2021.741647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/20/2021] [Indexed: 01/30/2023] Open
Abstract
Dietary behavior is a critical lifestyle factor affecting health. This study aimed to investigate food away from home (FAFH) and its effect on gastrointestinal (GI) health. A questionnaire-based survey was conducted with 300 participants at a hospital in Liouying, Taiwan. The survey collected demographic information and data on FAFH and GI health. The association of GI health with FAFH consumption behavior was significant (t-test, p < 0.05). Bodyweight status was associated with age (F = 5.01, p = 0.01), dietary situation (F = 1.96, p = 0.04), number of meals (F = 1.85, p = 0.03), dietary preferences (F = 2.84, p = 0), reasons for FAFH (F = 1.86, p = 0.02), FAFH types (F = 2.01, p = 0), and outcomes associated with FAFH (F = 2.51, p = 0). Gastrointestinal condition was associated with the number of meals (F = 2.55, p = 0), the level of activity after meals (F = 2.16, p = 0.02), and FAFH type (F = 1.48, p = 0.04). The results indicated that the participants aged 20–40 years had more problems related to their self-perceived body weight status than those aged 41–50 years. The results of this study clarify the FAFH among people in Taiwan and the effects on GI health and may serve as a reference for relevant behavioral research in food and health studies.
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Affiliation(s)
- Jyh-Jou Chen
- Gastroenterology and Hepatology Department, Chi-Mei Medical Center, Tainan, Taiwan.,College of Nursing and Health Sciences, Dayeh University, Changhua, Taiwan
| | - Li-Yun Tsai
- College of Nursing and Health Sciences, Dayeh University, Changhua, Taiwan
| | - Jung-Mei Tsai
- College of Nursing and Health Sciences, Dayeh University, Changhua, Taiwan.,Mackay Memorial Hospital, Taipei City, Taiwan.,Department of Nursing, Mackay Junior College of Medicine, Nursing, and Management, Taipei City, Taiwan.,Department of Nursing, Mackay Medical College, New Taipei City, Taiwan
| | - Chen-Yuan Hsu
- College of Nursing and Health Sciences, Dayeh University, Changhua, Taiwan
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Relative validity of FFQ to assess food items, energy, macronutrient and micronutrient intake in children and adolescents: a systematic review with meta-analysis. Br J Nutr 2020; 125:792-818. [PMID: 32807247 DOI: 10.1017/s0007114520003220] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
FFQ are one of the most widely used tools of research into nutritional epidemiology, and many studies have been conducted in several countries using this dietary assessment method. The present study aimed to evaluate the relative validity of FFQ, in comparison with other methods, in assessing dietary intake of children and adolescents, through a systematic review. Four electronic databases (Embase, PubMed, Scopus and Web of Science) found sixty-seven articles, which met the inclusion criteria (healthy children and adolescents from 3 to 18 years of age; journal articles written in English, Spanish and Portuguese between 1988 and March 2019; results showing the comparison between the FFQ with other methods of assessment of dietary intake). The articles were analysed by two independent reviewers. A meta-analysis was conducted using correlation coefficients as estimate effects between the FFQ and the reference standard method. Subgroup analysis and meta-regression were performed to identify the probable source of heterogeneity. In fifty-five of the sixty-seven studies, a single dietary assessment method was used to evaluate the FFQ; nine combined the two methods and three used three reference methods. The most widely used reference method was the 24-h recall, followed by the food record. The overall relative validity of the FFQ to estimate energy, macronutrient, certain micronutrient and certain food item intakes in children and adolescents may be considered weak. The study protocol was registered in PROSPERO under number CRD42016038706.
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Dairy Consumption at Snack Meal Occasions and the Overall Quality of Diet during Childhood. Prospective and Cross-Sectional Analyses from the IDEFICS/I.Family Cohort. Nutrients 2020; 12:nu12030642. [PMID: 32121167 PMCID: PMC7146220 DOI: 10.3390/nu12030642] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/21/2020] [Accepted: 02/25/2020] [Indexed: 12/22/2022] Open
Abstract
There is scarce information on the influence of dairy consumption between main meals on the overall diet quality through childhood, constituting the main aim of this research. From the Identification and prevention of Dietary- and lifestyle induced health EFfects In Children and infantS (IDEFICS) study, and based on the data availability in each period due to drop outs, 8807 children aged 2 to 9.9 years from eight European countries at baseline (T0: 2007-2008); 5085 children after two years (T1); and 1991 after four years (T3), were included in these analyses. Dietary intake and the Diet Quality Index (DQI) were assessed by two 24 hours dietary recalls (24-HDR) and food frequency questionnaire. Consumption of milk and yogurt (p = 0.04) and cheese (p < 0.001) at snack meal occasions was associated with higher DQI scores in T0; milk and yogurt (p < 0.001), and cheese (p < 0.001) in T1; and cheese (p = 0.05) in T3. Consumers of milk (p = 0.02), yogurt (p < 0.001), or cheese (p < 0.001) throughout T0 and T1 at all snack moments had significantly higher scores of DQI compared to non-consumers. This was also observed with the consumption of cheese between T1 and T3 (p = 0.03). Consumption of dairy products at snack moments through childhood is associated with a better overall diet quality, being a good strategy to improve it in this period.
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García Rodríguez M, Romero Saldaña M, Alcaide Leyva JM, Moreno Rojas R, Molina Recio G. Design and validation of a food frequency questionnaire (FFQ) for the nutritional evaluation of food intake in the Peruvian Amazon. JOURNAL OF HEALTH, POPULATION, AND NUTRITION 2019; 38:47. [PMID: 31856919 PMCID: PMC6923861 DOI: 10.1186/s41043-019-0199-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 10/28/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Food frequency questionnaires (FFQs) are dietary surveys widely used in studies of nutritional epidemiology because they are inexpensive, easy to complete and provide significant information on dietary intake over a long period of time. FFQs should be written specifically for each study group since diet may be influenced by ethnicity, culture, economic status and environmental factors. The aim of the authors on this work was to design and validate a food frequency questionnaire for the Peruvian Amazon population. METHODS Three hundred three individuals were selected and completed three 24-h recalls (R24). Two FFQs were conducted on two different occasions (FFQ.1 and FFQ.2). The validity of the FFQ was evaluated by comparing the relationship between the average daily nutrient intake estimated by the FFQs and that obtained by the three R24. The reproducibility was measured by comparing the mean nutrient intake of the two FFQs carried out. The correlations were assessed using the Pearson correlation coefficient, the intraclass correlation coefficient (ICC), the Lin correlation coefficient (CCC) and the Bland-Altman plot. RESULTS The results obtained to establish the validity showed a high correlation, with an average Pearson's correlation coefficient of 0.70, a CCI of 0.65 and a CCC of 0.60. Approximately 60% of the nutrients had a CCC above 0.60. In terms of reproducibility, better results were obtained, with an average Pearson's correlation coefficient of 0.67, 0.64 for CCI and 0.58 for CCC. CONCLUSIONS The correlation coefficients show good validity and reproducibility, and therefore, the FFQ we have developed may be considered a useful and valid tool to estimate the dietary intake of the Peruvian Amazon population.
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Sugianto R, Chan MJ, Wong SF, Shek LPC, Tan KH, Chong YS, Godfrey KM, Tai BC, Chong MFF. Evaluation of a Quantitative Food Frequency Questionnaire for 5-Year-Old Children in an Asian Population. J Acad Nutr Diet 2019; 120:437-444. [PMID: 31866358 DOI: 10.1016/j.jand.2019.09.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 09/26/2019] [Indexed: 01/27/2023]
Abstract
BACKGROUND Food frequency questionnaires (FFQs) are often used to assess dietary intakes due to their ability to assess intake over extended periods, their low respondent burden, and their cost-effectiveness. A quantitative FFQ that includes locally appropriate food items for 5-year-old children in a multiethnic Asian population was developed, but its validity has not previously been evaluated. OBJECTIVE To evaluate the relative validity of a newly developed FFQ as a dietary assessment tool for 5-year-old children in a multiethnic Asian population. DESIGN The 112 -food item FFQ was administered by trained interviewers to caregivers of children. Frequency of food items consumed in the previous month and portion size information were collected. The FFQs were evaluated against 3-day nonweighed diet records (DRs) completed by caregivers. PARTICIPANTS/SETTING The dietary data of 361 children aged 5 years from the Growing Up in Singapore Towards Healthy Outcomes mother-offspring cohort were collected in 2015-2016. MAIN OUTCOME MEASURES Nutrients of interest included energy, macronutrients, fiber, cholesterol, vitamin A, beta carotene, calcium, and iron, calculated from the FFQs and DRs. STATISTICAL ANALYSES PERFORMED Nutrient intakes according to FFQs in relation to DRs were assessed using Pearson's correlation, Lin's concordance, Bland-Altman plots, quintile joint classification, and Cohen's κ statistics. RESULTS The highest energy-adjusted correlation (Pearson's r=0.71) and concordance (Lin's concordance=0.69) were observed for calcium. Fiber, saturated fat, polyunsaturated fatty acids (PUFA), cholesterol, and iron also showed correlation coefficients and concordance of at least 0.40. Bland-Altman plots suggested no substantial bias across ranges of intakes for the nutrients with correlations and concordance of 0.40 or above. Quintiles joint classification showed substantial agreement for calcium (κ=0.66), and moderate agreement for iron, fiber, saturated fat, polyunsaturated fat, and beta carotene (κ=0.59, 0.54, 0.49, 0.44, 0.43, respectively). CONCLUSIONS The newly developed FFQ is in reasonable agreement with DR for estimating intakes of calcium, fiber, saturated fat, PUFA, cholesterol, and iron. In addition, the FFQ is able to classify children according to quintiles of nutrient intakes, with moderate to substantial quintile agreements between FFQ and DR for calcium, iron, fiber, saturated fat, PUFA, and beta carotene. To assess the remaining nutrients, DR method is recommended instead of the FFQ.
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Mogul DB, Brereton N, Carson KA, Pittarelli M, Daniel H, Torbenson M, Schwarz KB. Development of a Dietary Methyl Donor Food Frequency Questionnaire to Assess Folate and Vitamin B 12 Status in Children with Chronic Hepatitis B Virus Infection. J Pediatr 2018; 203:41-46.e2. [PMID: 30243534 DOI: 10.1016/j.jpeds.2018.07.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/10/2018] [Accepted: 07/26/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To develop a dietary methyl donor food frequency questionnaire (DMD-FFQ) that is validated in a cohort of US children and to determine whether the consumption of folate and vitamin B12, principal DMDs, correlates with HBV DNA levels and its methylation density. STUDY DESIGN We developed a semiquantitative DMD-FFQ to estimate intake of folate and vitamin B12 and validated this instrument against a 24-hour dietary recall and biomarkers-red blood cell folate, serum vitamin B12, and homocysteine-in 35 children with chronic HBV infection without other medical comorbidities. Estimates of DMD, as well as the serum biomarkers, were correlated with the methylation density of HBV CpG island 2 and HBV DNA levels. RESULTS Folate per kilogram of body weight by the DMD-FFQ correlated positively with 24-hour recall (r = 0.60; P < .001) and red blood cell folate (r = 0.40; P = .02), and negatively with homocysteine (r = -0.54; P < .001). Vitamin B12 per kilogram by DMD-FFQ also correlated positively with 24-hour recall (r = 0.57; P < .001) and serum vitamin B12 (r = 0.36, P = .04), and negatively with homocysteine (r = -0.44; P = .008). Neither DMD intake (from DMD-FFQ or 24-hour recall) nor serum biomarkers correlated with HBV DNA levels or its methylation density. CONCLUSIONS Our DMD-FFQ correlates well with a 24-hour recall and circulating biomarkers. Although little evidence existed that consumption of these micronutrients correlated with HBV replication, this tool could prove useful for investigating epigenetic modification by diet for several pediatric diseases.
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Affiliation(s)
- Douglas B Mogul
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Johns Hopkins University School of Medicine, Baltimore, MD.
| | - Nga Brereton
- Institute for Clinical and Translational Research, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Kathryn A Carson
- Institute for Clinical and Translational Research, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Maria Pittarelli
- Institute for Clinical and Translational Research, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Hubert Daniel
- Department of Pathology, Johns Hopkins Hospital, Baltimore, MD
| | | | - Kathleen B Schwarz
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Johns Hopkins University School of Medicine, Baltimore, MD
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Wu Y, Chen W, Shen J, Tan L, L'Abbe MR, Pearce EN, Wang W, Tian X, Wang W, Zhang W. Reproducible and reliable general semiquantitative food frequency questionnaire for evaluating iodine intake in Chinese children. Nutr Res 2018; 55:72-80. [PMID: 29914630 DOI: 10.1016/j.nutres.2018.04.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 03/22/2018] [Accepted: 04/17/2018] [Indexed: 01/10/2023]
Abstract
Iodine deficiency is a global issue that is correlated with a variety of diseases and can affect individuals of all ages. We hypothesized that a general, semiquantitative food frequency questionnaire (FFQ) could be a valuable tool to evaluate iodine intake in children. Study participants comprised 687 healthy children between the ages of 7 and 13 years. The FFQ was developed to assess habitual iodine intake over a 6-month period (FFQ1). A 3-day estimated food diary (3DEFD) and the habitual daily iodine intake, calculated from 2-repeated 24-hour urine iodine excretion, tested the intermethod relative validity of the FFQ. There were 92 children who also repeated the FFQ (FFQ2) 3 weeks later to assess for FFQ reproducibility. Iodine intake estimated by FFQ1 + water was significantly higher than that indicated by the 3DEFD + water (204 μg/d vs 156 μg/d, P < .001), whereas there were no differences between habitual daily iodine intake and FFQ1 + water (185 μg/d vs 204 μg/d, P = .223). The interclass correlation coefficients of iodine intake estimated by the FFQ1 and FFQ2 were 0.72 (P < .001). The FFQ1 + water was moderately correlated with the 3DEFD + water (Spearman correlation coefficient = 0.57, P < .001) as well as habitual daily iodine intake (SCC = 0.34, P < .001). The subjects classified into the same or adjacent quartiles ranged from 32% to 93%. The κ value α was 0.46 for FFQ1 and FFQ2 (P < .001) 0.27 for FFQ1 + water and 3DEFD + water (P < .001), and 0.09 for FFQ1 + water and habitual daily iodine intake (P < .001). The results showed this FFQ is a reliable and reproducible tool in evaluating iodine intake in Chinese children.
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Affiliation(s)
- Yalan Wu
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Wen Chen
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Jun Shen
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Long Tan
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Mary R L'Abbe
- Department of Nutritional Sciences Faculty of Medicine, University of Toronto, FitzGerald Building, 150 College St, Rm 315, Toronto, Canada M5S 3E2.
| | - Elizabeth N Pearce
- Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, 88 East Newton St, H3600, Boston, MA 02118, USA.
| | - Wenqiang Wang
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Xiaoxiao Tian
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Wei Wang
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
| | - Wanqi Zhang
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
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