Korean Journal of Community Nutrition

Volume 7(3); June 2002

Original Articles

[English]
A Comparative Study on the Dietary Attitudes, Dietary Behaviors and Diet Qualities of Food and Nutrition Major and Non-major Female University Students: Sun Hee Cheong, Woojung Kwon, Kyung Ja Chang; Korean J Community Nutr 2002;7(3):293-303. Published online June 30, 2002

Abstract PDF: The purpose of this study was to compare dietary attitudes, dietary behaviors and diet qualities of Food and Nutrition major and non-major female students at a university located in Inchon. The subjects included 74 female Food and Nutrition majors and 45 non-Food and Nutrition major female university students. This cross-sectional survey was conducted using a self-administered questionnaire, and the data were analyzed by a SPSS 10.0 program. The nutrient intake data collected from Three-day recalls were analyzed by the Computer Aided Nutritional Analysis Program and then the diet quality was estimated using the Mean Adequacy Ratio (MAR), the Nutrient Adequacy Ratio (NAR) and the Index of Nutritional Quality (INQ). There was no significant difference in dietary behaviors between Food and Nutrition majors and non-majors. However, most of the female university students had poor eating habits, such as overeating, unbalanced meals, and skipping of meals. In particular, more than 50% of the female university students skipped breakfast. As for weighing themselves once a week, changing dietary lifestyles, calculating food calories and having interest in information on nutrition and health, the ratio of Food and Nutrition majors was significantly higher as compared to that of the non-majors. There was a significant difference in food consumption frequency except for milk and milk products, and iron-rich foods between the Food and Nutrition majors and non-majors. However, there was a significant difference in the frequency scores of iron-rich foods between the Food and Nutrition majors and non-majors. The MAR of Food and Nutrition majors and non-majors were 0.80 +/- 0.13, 0.79 +/-0.13, respectively. However, in the Food and Nutrition majors and non-majors, the NARs of calcium were 0.61 +/- 0.21 and 0.59 +/-0.20, and that of iron were 0.61 +/-0.21 and 0.59 +/-0.16, respectively, which was extremely low when compared to that of the other nutrients. This result was similar to that of the INQ. Therefore, nutritional education is necessary if female university students are to practice optimal nutrition, including well-balanced diets and eating foods of high nutritional quality.

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[English]
The Relationship of Nutritional Satus to the Degree of Hypertension in Residents of Kangbuk-gu, Seoul: Eun Jung Son, Hyun Kyung Moon; Korean J Community Nutr 2002;7(3):304-315. Published online June 30, 2002

Abstract PDF: The purpose of this study was to relate the degree of hypertension to nutritional status, in order to prepare basic data for a nutrition program. The study using the WHO standard divided the residents in Kangbuk-gu into a normal group (NG) of 254 adults with systolic blood pressure (SBP) < 130 or diastolic blood pressure (DBP) < 85; a borderline hypertensive group (BG) of 81 adults with 130 < or = SBP < or = 140 or 85 < or = DBP < or = 90; and a hypertensive group (HG) of 143 adults with SBP > 140 or DBP > 90. The mean age of HG was older than the other groups (p < 0.001). The dietary intake was investigated by the 24-hour recall method. The Ca intake as the percentage of the Korean Recommended Dietary Allowances (RDA) for the HG were higher than that of the other groups (p < 0.01). The Nutrient Adequacy Ratio (NAR) of Ca and Vit. A were below 0.75 for all three groups. The Mean Adequacy Ratio (MAR) was above 0.75 (p > 0.05) for all three groups. The Dietary Variety Score (DVS) of the NG was 22.7, and higher than those of the other groups (p > 0.05). The fasting blood sugar (p < 0.001), total cholesterol (p < 0.001), protein (p < 0.001), albumin (p < 0.01), hemoglobin (Hb) (p < 0.001), alkaline phosphatase (ALP) (p < 0.001), and creatinine (p < 0.05) values of the HG were higher than those of the other groups. The Body Mass Index (BMI) and the waist-hip ratio (WHR) of the HG were higher than those of the other groups (p < 0.001). In conclusion, these results showed that there tended to be differences among the three groups. For effective nutritional education and counseling of each group, we should further study the differences and understand their characteristics of each group in order to provide nutritional education for controling and preventing hypertension.

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[English]
A Study on the Health and Nutritional Status of Bus Drivers in the Masan Area: Hyun Sook Yoon, Gi Ryun Kim; Korean J Community Nutr 2002;7(3):316-326. Published online June 30, 2002

Abstract PDF: This study was carried out on 178 bus drivers in the Masan area to investigate their health and nutritional status. THe nutritional status of the subjects was surveyed using a self-administered questionnaire, and blood analyses were conducted through annual health examinations in June, 1999. The results were as follows: About 51% were classified as normal, 33% as health-concerned, and 17% as disease-suspected. The levels of total serum cholesterol were significantly higher in the over 20 year group (194.64 +/- 41.42 mg/dl) than in the under 10 year group (175.00 +/- 31.33 mg/dl) with respect to the length of their driving careers. Systolic blood pressure (SBP) was significantly higher in the 51 to 60 age group than in the other groups (p < 0.05). The total serum cholesterol increased with increasing age (p < 0.001), and SBP increased with increasing Body Mass Index (BMI)(p < 0.001). Diastolic blood pressure (DBP), total cholesterol (p < 0.01), hemoglobin (p < 0.05)and glutamate-pyruvate-aminotransferase (GPT)(p < 0.05) were significantly higher in the BMI of over 20, than in the BMI under 20. The GPT was significantly higher in the BMI over 25 than in the BMI under 25. In The mean daily energy intake was 1912.7 kcal (76.5% of the RDA) and the protein intake was 74.3 g (106.2% of the RDA). Compared with the recommended allowance, the energy, calcium, thiamin, and riboflavin intakes were below, and the Fe, vitamin A, vitamin C intakes were above the Korean RDA. The average carbohydrate, protein, fat ratio of energy intake was 66 : 15 : 19, respectively. The length of their driving careers had a positive correlation with their ages and total serum cholesterol levels, and their ages had a positive correlation with their blood pressures, total serum cholesterol and hemoglobin levels and BMI. Their BMI had a positive correlation with their ages, blood pressures, total serum cholesterol, hemoglobin, GPT and GOT levels. The results of this study indicate that bus drivers needed regular exercise, and control of their body weights to prevent chronic diseases, and that their health status should be monitored as the length of their driving careers and ages increase.

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[English]
Association of Bone Densities with Anthropometric Indices and Lifestyles in Elderly People: Sook Mee Son, Ye Na Chun; Korean J Community Nutr 2002;7(3):327-335. Published online June 30, 2002

Abstract PDF: This study was performed to investigate the relationships among bone mineral densities (BMD), anthropometric data and lifestyle factors in the elderly. Subjects included 138 elderly (male: 38, female: 100) aged over 65 years, who were home-dwelling in a low-income area of Puchon City. The BMDs of the lumbar spines (LS), femoral necks (FN), Ward's triangles (WT) and trochanters (TC) were measured by dual energy X-ray absorptiometry. The females showed significantly lower BMDs in four sites (p < 0.0001). The elderly aged over 75 revealed significantly more decreased femoral BMDs than the elderly aged 65 to 74. Female with BMIs of 20 to 25, showed significantly higher BMDs in LS, FN and trochanter than those with BMIs of less than 20. However, males displayed significantly higher BMDs in only LS, with increasing BMIs. THe BMDs of LS correlated with weights (r = 0.543, p < 0.001), heights (r = 0.477, p < 0.001), upper arm circumferences (r = 0.368, p < 0.01), waist circumferences (r = 0.367, p < 0.001), subscapular skinfold thicknesses (r = 0.363, p < 0.001) and hip circumferences (r = 0.231, p < 0.01). Non-smokers and non-drinkers showed significantly higher BMDs in trochanters only in the case of the males. Female milk-drinkers showed significantly elevated LS BMDs. Eighteen percent of the males were assessed as having osteoporosis, as compared to fifty percent of the females. Ninety-three percent of the females and 81.6% of the males responded that they often or always had "difficulty in standing for a long time".

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[English]
Nutritional Status and Energy Expenditure in the Elderly in a Rural Community: Heejung Yoon, Jinhee Kwoun, Sungkook Lee; Korean J Community Nutr 2002;7(3):336-344. Published online June 30, 2002

Abstract PDF: In this study, nutrient intake status and energy expenditure were examined to investigate the nutritional status of the elderly in a rural community. The results obtained by questionaries, the 24 hour recall method, and time-diary were as follows: The elderly men surveyed were 73.8 years old, on the average. The elderly women surveyed were 73.5 years old, on the average. The proportion of the elderly with diseases was 51.9%. Most of the subjects (86.1%) had a regular meal pattern of consuming three meals a day. The average daily energy intake of the rural elderly was much lower than the Korean RDA. The dietary assessment data showed that each energy intake of the males and the females was 79.5% and 84.3% of the RDA, respectively. The dietary intake of Ca, Fe, niacin, thiamin, and riboflavin was lower than the Korean RDA, and that of P and Vitamin C was adequate. The Fe intake was significantly different with respect to age and sex (p < 0.05). Although, in both elderly men and elderly women it decreased with age, the elderly men's intake was lower than the elderly women's. The heights of the elderly men and the elderly women was 159.7 cm and 147.5 cm, respectively, and the weights were 60.0 kg and 52.2 kg, respectively, and the BMI was in the moderate range. Heights significantly decreased with age (p < 0.05). According to daily living schedules, leisure time (11.0 hour) was the longest, physiological time (9.6 hours) was next, and work time (3.4 hours) was the shortest. Energy expenditure significantly decreased with age (p < 0.01). Energy intake also decreased with aging. Energy balance (energy expenditure/ energy intake) was 93.4% in elderly men and 104.0% in elderly women. Especially, in elderly men in the 65 to 74 age range, the energy balance was the lowest, and the nutrient intake was also much lower than that of elderly women.

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[English]
A Survey on the Feeding Practices of Women for the Development of a Breastfeeding Education Program: Breastfeeding Knowledge and Breastfeeding Rates: Ki Nam Kim, Taisun Hyun, Nam Mi Kang; Korean J Community Nutr 2002;7(3):345-353. Published online June 30, 2002

Abstract PDF: A survey was carried out to investigate the breastfeeding knowledge, breastfeeding rates and related factors among women in Seoul and the Chungbuk area, in order to obtain baseline data for the development of an education program on breastfeeding. Subjects included 671 lactating mothers who visited public health or pediatric centers, between December, 1999 and February, 2000 and were interviewed using a questionnaire. The results are as follows: In the breastfeeding knowledge, most of the subjects (93.4%) knew correctly that 'breastfeeding is better for a baby's emotional development than formula feeding,' whereas only half of the subjects (51.7%) answered correctly the question on whether 'formula is more nutritious than breastmilk.' The breastfeeding rates were about 57%, 40%, 33% and 12%, respectively for baby's aged 1, 3, 6, and 12 months. These results showed that the breastfeeding rate rapidly decreased with the baby's age. Lower breastfeeding rates were associated with high educational level (college graduate and above), high income, mothers' employment, no experience of attending breastfeeding education programs, and no planning on breastfeeding prior to pregnancy. There was a significant relationship between the level of knowledge and breastfeeding practice; the higher the knowledge score, the higher the breastfeeding rate. In conclusion, an education program should be developed and offered for each low breastfeeding rate group, in order to promote breastfeeding.

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[English]
A Conjoint-Based Approach to Analyze the Importance of Brand Choice Attributes: Pizza Restaurant Cases: In Sook Chae, Min A Lee, Seo Young Shin, Il Sun Yang, Jin A Cha; Korean J Community Nutr 2002;7(3):354-360. Published online June 30, 2002

Abstract PDF: The purposes of this study were (1) to understand how customers trade off one attribute against another when they choose a pizza restaurant, (2) to compare the importance of individual attributes with their relative importance and (3) to compare customers' brand choice patterns with the prediction of pizza restaurant operators. Empirical data for this study were collected from the customers (n = 307) and operators (n = 273) of four famous pizza franchise restaurants in Korea, Pizza Hut, Mister Pizza, Domino's Pizza and Pizza Mall. The attributes and attribute levels for the hypothetical profiles were decided from the focus group discussion. A total of 16 profiles was selected from fractional factorial designs. The SPSS conjoint procedure was used to calculate utility scores and simulate profiles. The overall group statistics showed the relative importance of all attributes compared with one other. Taste was the most important attribute (32.48%) in choosing a pizza restaurant, followed by service (21.87%), atmosphere (17.23%), price (15.17%) and speed of delivery (13.26%). There was a difference between the customers' ratings of the importance of the individual attributes and the ranking of the same attributes' relative importance as derived from the conjoint analysis. The operators rated service (26.54%) as also being important, as well as taste (27.76%), in choosing a pizza restaurant. The rankings of relative importance for pizza taste, service and price were statistically different in the customers' and operators' data (p < .001, p < .01, p < .05). Operators who want to differentiate themselves from their competitors should make decisions based on an increased understanding of their customers' brand choice decision process and measure the hidden needs of their customers.

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[English]
School Food Service in Korea: Investigation of the Operation and Management Systems: Young Eun Lee, Il Sun Yang, Jin A Cha, In Sook Chae, Hye Seung Kang; Korean J Community Nutr 2002;7(3):361-372. Published online June 30, 2002

Abstract PDF: The purpose of this study was to investigate the operation and management systems of the school food services in Korea and to provide useful data for improving the quality of the school food services. This study was conducted in school food service operations nationwide using a written questionnaire. The questionnaires were mailed to the dieticians of three types of school food service systems-conventional, commissary, and joint-management. Of the 660 schools that participated in this study, the responses from 212 conventional system, 212 commissary system and 200 joint-management system services were selected for analysis. Statistical analysis was performed utilizing the SAS/Win 6.12 program so as to provide a descriptive statistics. The main results of this study can be summarized as follows: The average number of meals served per day was 1014, 738 and 695 in the conventional food service, the commissary food service and the joint-management food service systems, respectively. Over half (58.9%) of food service facilities were utilizing computer programs for their operations. Most of the commissary food service systems (52.4%) had a satellite school and served a maximum of 2000 meals per day. In most of the joint-management food service systems (87.1%), the number of food service schools managed was two and a maximum of 3330 meals were served. Only one dietician was posted irrespective of the school food service system. The mean hours of work by the dietician per day was 8.9, 8.6 and 8.6 in the conventional food service, the commissary food service and the joint-management food service systems, respectively. The principal work functions of cook personnel were cooking and cleaning.

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