1.Development of nutrition quotient for elementary school children to evaluate dietary quality and eating behaviors
Jung-Sug LEE ; Ji-Yun HWANG ; Sehyug KWON ; Hae-Rang CHUNG ; Tong-Kyung KWAK ; Myung-Hee KANG ; Young-Sun CHOI ; Hye-Young KIM
Journal of Nutrition and Health 2020;53(6):629-647
Purpose:
This study was undertaken to develop a nutrition quotient for elementary school children (NQ-C) for evaluating the overall dietary quality and eating behaviors.
Methods:
The NQ-C was developed by implementing 3 stages: item generation, item reduction, and validation. Candidate food behavior checklist (FBC) items of the NQ-C were derived from systematic literature reviews, expert in-depth interviews, statistical analyses of the fifth Korean National Health and Nutrition Examination Survey data, and national nutrition policies and recommendations. For the pilot survey, 260 elementary school students (128 second graders and 132 fifth graders) completed self-administered questionnaires as well as 24-hour dietary intakes, with the help of their parents and survey team staff, if required. Based on the pilot survey results, expert reviews, and priorities of national nutrition policy and recommendations, checklist items were reduced from 41 to 24. A total of 20 items for NQ-C were finally selected from results generated from 1,144 nationwide samples surveyed. Construct validity of the NQ-C was assessed using the confirmatory factor analysis, LInear Structural RELations.
Results:
Analyses of the exploratory factors of NQ-C identified that 5 dimensions of diet (balance, diversity, moderation, practice and environment) accounted for 46.2% of the total variance. Standardized path coefficients were used as weights of the items. The NQ-C and 5-factor scores of the subjects were calculated using the obtained weights of the FBC items.
Conclusion
Our data indicates that NQ-C is a useful and suitable instrument for assessing nutrition adequacy, dietary quality, and eating behaviors of Korean elementary school children.
2.Development of NQ-E, Nutrition Quotient for Korean elderly: item selection and validation of factor structure
Min Jae CHUNG ; Tong Kyung KWAK ; Hye Young KIM ; Myung Hee KANG ; Jung Sug LEE ; Hae Rang CHUNG ; Sehyug KWON ; Ji Yun HWANG ; Young Sun CHOI
Journal of Nutrition and Health 2018;51(1):87-102
PURPOSE: The purpose of this study was to develop a valid instrument for measuring the dietary quality and behaviors of Korean elderly. METHODS: The development of the Nutrition Quotient for Elderly (NQ-E) was conducted in three steps: item generation, item reduction, and validation. The 41 items of the NQ-E checklist were derived from a systematic literature review, expert in-depth interviews, statistical analyses of the fifth Korean National Health and Nutrition Examination Survey data, and national nutrition policies and recommendations. Pearson's correlation was used to determine the level of agreement between the questionnaires and nutrient intake level, and 24 items were selected for a nationwide survey. A total of 1,000 nationwide elderly subjects completed the checklist questionnaire. The construct validity of the NQ-E was assessed using confirmatory factor analysis, LISREL. RESULTS: The nineteen checklist items were used as final items for NQ-E. Checklist items were composed of four-factors: food behavior (6 items), balance (4 items), diversity (6 items), and moderation (3 items). The standardized path coefficients were used as the weights of the items. The NQ-E and four-factor scores were calculated according to the obtained weights of the questionnaire items. CONCLUSION: NQ-E would be a useful tool for assessing the food behavior and dietary quality of the elderly.
Aged
;
Checklist
;
Humans
;
Nutrition Policy
;
Nutrition Surveys
;
Weights and Measures
3.Erratum: Tables Correction. Development of NQ-E, Nutrition Quotient for Korean elderly: item selection and validation of factor structure.
Min Jae CHUNG ; Tong Kyung KWAK ; Hye Young KIM ; Myung Hee KANG ; Jung Sug LEE ; Hae Rang CHUNG ; Sehyug KWON ; Ji Yun HWANG ; Young Sun CHOI
Journal of Nutrition and Health 2018;51(2):199-200
The original version of this article contained errors in Tables. The contents of Table 4, 5, and 6 should be corrected.
4.Development of Nutrition Quotient for Korean adults: item selection and validation of factor structure.
Jung Sug LEE ; Hye Young KIM ; Ji Yun HWANG ; Sehyug KWON ; Hae Rang CHUNG ; Tong Kyung KWAK ; Myung Hee KANG ; Young Sun CHOI
Journal of Nutrition and Health 2018;51(4):340-356
PURPOSE: This study was conducted to develop a nutrition quotient (NQ) to assess overall dietary quality and food behaviors of Korean adults. METHODS: The NQ was developed in three steps: item generation, item reduction, and validation. Candidate items of the NQ checklist were derived from a systematic literature review, expert in-depth interviews, statistical analyses of the Korea National Health and Nutrition Examination Survey (2010 ~ 2013) data, and national nutrition policies and recommendations. A total of 368 adults (19 ~ 64 years) participated in a one-day dietary record survey and responded to 43 items in the food behavior checklist. Pearson's correlation coefficients between responses to the checklist items and nutritional intake status of the adults were calculated. Item reduction was performed, and 24 items were selected for a nationwide survey. A total of 1,053 nationwide adult subjects completed the checklist questionnaires. Exploratory and confirmatory factor analyses were performed to develop a final NQ model. RESULTS: The 21 checklist items were used as final items for NQ. Checklist items were composed of four factors: nutrition balance (seven items), food diversity (three items), moderation for the amount of food intake (six items), and dietary behavior (five items). The four-factor structure accounted for 41.8% of the total variance. Indicator tests of the NQ model suggested an adequate model fit (GRI = 0.9693, adjusted GFI = 0.9617, RMR = 0.0054, SRMR = 0.0897, p < 0.05), and item loadings were significant for all subscales. Standardized path coefficients were used as weights of the items. The NQ and four-factor scores were calculated according to the obtained weights of the questionnaire items. CONCLUSION: NQ for adults would be a useful tool for assessing adult dietary quality and food behavior. Further investigations of adult NQ are needed to reflect changes in their food behavior, environment, and prevalence of chronic diseases.
Adult*
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Checklist
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Chronic Disease
;
Diet Records
;
Eating
;
Humans
;
Korea
;
Nutrition Policy
;
Nutrition Surveys
;
Prevalence
;
Weights and Measures
5.Development of NQ-A, Nutrition Quotient for Korean Adolescents, to assess dietary quality and food behavior.
Hye Young KIM ; Jung Sug LEE ; Ji Yun HWANG ; Sehyug KWON ; Hae Rang CHUNG ; Tong Kyung KWAK ; Myung Hee KANG ; Young Sun CHOI
Journal of Nutrition and Health 2017;50(2):142-157
PURPOSE: The purpose of this study was to develop a nutrition quotient for adolescents (NQ-A) to assess overall dietary quality and food behavior of Korean adolescents. METHODS: Development of the NQ-A was undertaken in three steps: item generation, item reduction, and validation. Candidate items of the NQ-A checklist were selected based on literature reviews, results of the fifth Korea National Health and Nutrition Examination Survey data, dietary guidelines for Korean adolescents, expert in-depth interviews, and national nutrition policies and recommendations. A total of 213 middle and high school students participated in a one-day dietary record survey and responded to 41 items in the food behavior checklist. Pearson's correlation coefficients between the responses to the checklist items along with nutritional status of the adolescents were calculated. Item reduction was performed, and 24 items were selected for the nation-wide survey. A total of 1,547 adolescents from 17 cities completed the checklist questionnaire. Exploratory factor and confirmatory factor analyses were performed to develop a final NQ-A model. RESULTS: Nineteen items were finalized as the checklist items for the NQ-A. Checklist items were composed of five factors (balance, diversity, moderation, environment, and practice). The five-factor structure accounted for 47.2% of the total variance. Standardized path coefficients were used as weights of the items. The NQ-A and five-factor scores were calculated based on the obtained weights of the questionnaire items. CONCLUSION: Nutrition Quotient for adolescents (NQ-A) would be a useful instrument for evaluating dietary quality and food behavior of Korean adolescents. Further research on NQ-A is needed to reflect changes in adolescent's food behavior and environment.
Adolescent*
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Checklist
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Diet Records
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Humans
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Korea
;
Nutrition Policy
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Nutrition Surveys
;
Nutritional Status
;
Weights and Measures
6.Perception and practice regarding allergen labeling: focus on food-related employees.
Si Eun PARK ; Yong Seok KWON ; Jin Kyoung PAIK ; Tong Kyung KWAK ; Wan Soo HONG
Nutrition Research and Practice 2016;10(4):424-432
BACKGROUND/OBJECTIVES: Most consumers are able to recognize allergenic foods. However, the frequency of checking such foods is reportedly low, resulting in higher prevalence of food-related allergic reactions in Korea compared to other countries. Thus, this study was performed to investigate the overall perception of allergenic food labeling and its practice level in food manufacturing company employees. SUBJECTS/METHODS: The survey was administered to food safety employees and food development teams at food companies located in metropolitan areas. A total of 399 (93.8%) valid samples were used in the final analysis. Statistical analyses, including Frequency Analysis, t-test, Anova, PCA (Principal Component Analysis), and Pearson Correlation Analysis using SPSS ver. 21.0, were performed. RESULTS: The correct answer rate in the analysis of allergy-related knowledge level ranged from 15.0% to 89.7%. Analysis of differences in allergy-related perception by knowledge level showed significant differences in introduction of a food recall system, strengthening of relevant laws and regulations, content labeling, description of substitutional food, and differentiated package by age. CONCLUSIONS: It can be concluded that labeling of allergenic foods should be made easier and more convenient for checking by employees, developers, and consumers, and it is necessary to provide contents through the development of publicity, guidelines, or APP along with labeling.
Food Labeling
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Food Safety
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Hypersensitivity
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Jurisprudence
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Korea
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Passive Cutaneous Anaphylaxis
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Prevalence
;
Social Control, Formal
7.Development of nutrition quotient for Korean preschoolers (NQ-P): Item selection and validation of factor structure.
Jung Sug LEE ; Myung Hee KANG ; Tong Kyung KWAK ; Hae Rang CHUNG ; Sehyug KWON ; Hye Young KIM ; Ji Yun HWANG ; Young Sun CHOI
Journal of Nutrition and Health 2016;49(5):378-394
PURPOSE: Screening of preschool-age children for nutrition programs to improve dietary intake and behaviors requires cost-effective and easily administered validated assessment tools. The purpose of this study was to develop a parent/caregiver-administered instrument for measuring diet quality and behaviors of preschoolers as a nutrition quotient for preschoolers (NQ-P). METHODS: Development of NQ-P was carried out in three steps: item generation, item reduction, and validation. The 24-h dietary record was selected as the gold standard reference tool. The 38 items of the NQ-P checklist were derived from a systematic literature review, expert in-depth interviews, statistical analysis of the fifth Korean National Health and Nutrition Examination Survey data, and national nutrition policies and recommendations. Self-administered questionnaires were delivered to parents who recorded 24-h dietary intakes of 100 responders aged 3~5 yr. Pearson's correlation was used to measure the level of agreement between questionnaires. Item reduction was performed, and 20 items were selected based on survey results, expert reviews, and priorities of national nutrition policy and recommendations. The 412 nationwide subjects sampled through daycare centers completed the 20-item checklist questionnaire. The construct validity of the NQ-P was assessed using confirmatory factor analysis, LISREL. RESULTS: After analyses of exploratory factors, NQ-P items identified three dimensions of diet (balance, moderation, and environment). The three-factor structure accounted for 49.28% of the total variance. Standardized path coefficients were used as weights of the items. The NQ-P and three-factor scores of the subjects were calculated by the obtained weights of the questionnaire items. CONCLUSION: A food behavior checklist for preschoolers' NQ would be a useful and suitable instrument for evaluating nutrition adequacy and dietary quality of Korean preschoolers.
Checklist
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Child
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Diet
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Diet Records
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Humans
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Mass Screening
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Nutrition Policy
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Nutrition Surveys
;
Parents
;
Weights and Measures
8.Prevalence of food allergy and perceptions on food allergen labeling in school foodservice among Korean students.
Ah Hyun LEE ; Kyu Earn KIM ; Kyung Eun LEE ; Seong Hui KIM ; Tae Whan WANG ; Kyung Won KIM ; Tong Kyung KWAK
Allergy, Asthma & Respiratory Disease 2013;1(3):227-234
PURPOSE: Prevalence of food allergy and perceptions on food allergen labeling in school foodservice among elementary, middle, and high school students were investigated in Korea. METHODS: A total of 1,000 elementary, middle, and high schools were selected in 16 cities and provinces of Korea and students attending the schools were surveyed using a questionnaire modified from the Korean International Study of Asthma and Allergies in Childhood questionnaire in July 2012. Responses from 27,679 students were used for data analysis. RESULTS: The ratio of the students who had experienced food allergy was 12.6%; 7.6% of the responding students had food allergy reactions last 12 months and 6.8% of the students had been diagnosed for food allergy by doctors. Eggs, milk, peach, and crabs were the most frequent allergenic foods for the elementary school 1st graders, 5th graders, middle, and high school students, respectively, who had experienced food allergy last 12 months. The students with food allergy read menus more frequently and were more interest in food allergen labeling in school foodservice than their counterparts. Both of the student groups with and without food allergy perceived food allergen labeling important for the students with food allergy and their parents. CONCLUSION: The prevalence of food allergy and major allergenic foods varied by school years. The Korean students had positive perception on allergic food labeling in school foodservice. An effective food allergen labeling system for school foodservice should be developed and implemented that reflects prevalence, symptoms, and food allergens among Korean students.
Allergens
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Asthma
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Eggs
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Food Hypersensitivity
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Food Labeling
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Humans
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Hypersensitivity
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Korea
;
Milk
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Ovum
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Prevalence
;
Prunus persica
;
Surveys and Questionnaires
9.Assessment of Kindergarten Principals and Teachers' Performance Degree of Foodservice Hygiene Management and Foodservice Employees' Hygiene Knowledge.
Joo Eun LEE ; Kyung Sook CHOI ; Tong Kung KWAK
Journal of the Korean Dietetic Association 2012;18(4):308-325
This research aimed to survey foodservice hygiene management practices performed by principals and teachers as well as examine foodservice employees' hygiene knowledge in kindergartens. Surveys were administered to principals, teachers, and foodservice employees at 392 kindergartens. The total average score of six categories was 4.28 out of 5.0. Average score of the production process management category was the lowest at 3.90 while safety management was the highest at 4.69. Other average scores were as follows: facilities and equipment 4.20, personal hygiene 4.14, food ingredient control 4.35, and environmental sanitation 4.39. Teachers' foodservice hygiene management practices scored 3.8 points out of 5 on average. Hygiene knowledge of foodservice employees was also tested. The mean score of foodservice hygiene knowledge was 76.29%. The lowest scoring category was personal hygiene, suggesting that foodservice employees require more knowledge on proper personal hygiene practices. Possession rates of dish sterilizer, ultraviolet sterilizer, and hand washing facilities in the kitchen were low. These equipment installation rates should be raised accordingly. To enhance control of foodservice hygiene, kindergarten management should pay more attention to education and training related to foodservice sanitation.
Hand Disinfection
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Humans
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Hygiene
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Safety Management
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Sanitation
10.Development of Food Safety and Nutrition Education Contents for the Elderly: by Focus Group Interview and Delphi Technique.
Jung Hwa CHOI ; Eun Sil LEE ; Yoon Jin LEE ; Hye Sang LEE ; Hye Ja CHANG ; Kyung Eun LEE ; Na Young YI ; Yun AHN ; Tong Kyung KWAK
Korean Journal of Community Nutrition 2012;17(2):167-181
Our society is aging rapidly, and the number of elderly people who are in charge of purchasing and preparing foods at home is increasing. However, most the elderly have difficulty managing nutrition and food safety by themselves. The purpose of this study was to develop the necessary knowledge, through focus group interview and Delphi technique to establish a food safety and nutrition education program. The diet and educational needs of the elderly were surveyed through FGI. The education topics were decided by the Delphi technique. The education program consisted of a five week program, and the topics taught were 'Dietary Change for Healthy Life', 'Prevention of Food Poisoning in Everyday Life', 'Safe Food Handling for my Health', 'Healthy Dietary Life to Prevent Chronic Disease', and 'Safety! Nutrition! Healthy Dietary Life'. This education program was designed to decrease the perceived barriers, and to increase the perceived interests and the sense of self-efficacy. Education program materials, lesson plans, slides, handouts, videos, leaflets, and booklets were developed. Based on the results, the contents of the food safety guideline leaflets for the elderly were decided as the following: (1) wash your hands in the correct way; (2) select safe food; (3) cook foods safely; (4) keep foods safely; (5) keep kitchen utensils clean. In conclusion, if advanced education programs are implemented and delivered continuously in locations such as health centers and community welfare centers, those will contribute significantly to enhance the perception of food safety and to change the desirable dietary behavior of the elderly.
Aged
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Aging
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Delphi Technique
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Diet
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Fees and Charges
;
Focus Groups
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Food Handling
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Food Safety
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Foodborne Diseases
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Hand
;
Humans
;
Pamphlets

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