How should nutrient databases be evaluated?
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Databases, Factual↗
Biomedical subjects
C Byrd-Bredbenner
Publications and source records attributed to C Byrd-Bredbenner.
Computer-analyzed dietary intake printouts: guidelines for their design and student comprehension.
The purpose of this study was to determine the ability of individuals to comprehend and interpret information on nutrient analysis computer program printouts and to assess their understanding of certain concepts closely related to such printouts, specifically the Recommended Dietary Allowances (RDAs) and vitamin and mineral supplementation. The study sample comprised 553 college students who were randomly assigned to one of seven groups. Each group received a nutrient analysis computer printout that varied in terms of type, amount, and format of information supplied. Printouts with varying characteristics were used in order to identify those elements that contributed to the greatest and most correct understanding and interpretation. A 30-item objective knowledge test was used to assess understanding and ability to interpret information on the printouts. Research results indicate that most individuals had misconceptions concerning the RDAs and vitamin and mineral supplementation. Recommendations were made for improving the information provided on printouts regarding these two topics. Subjects had little difficulty in reading the printout correctly. However, groups whose printouts included only nutrient data generally had more difficulty using the information to draw appropriate conclusions and identify ways to improve dietary intake than did individuals whose printouts included short messages listing sources and functions of nutrients. Data presented in graphic format were more easily understood than data in spreadsheet form. Eight design recommendations intended to assist nutritionists and software designers in selecting and/or creating printouts were made on the basis of the results of this study.
Computer Graphics↗
A nutrition curriculum for health education: its effect on students' knowledge, attitude, and behavior.
The objective of the study was to determine the effect of nutrition instruction, using the curriculum guides, Nutrition In A Changing World, A Curriculum for Junior High Health, and A Curriculum for Senior High Health, on improving the nutrition knowledge, selected food/nutrition attitudes, and dietary behavior of students enrolled in secondary level health courses. Three groups of students were utilized including one experimental and two control groups at each level (junior high and senior high). The experimental group was pretested, taught the nutrition curriculum, and posttested. One control group was posttested only to measure the effect of the pretest on posttest performance. A second control group was pretested and posttested. Neither control group received nutrition instruction until after the study was completed. The three instruments used to collect data were a nutrition knowledge test, a food/nutrition attitude instrument, and a food frequency form. The results indicate that, at all grade levels, the experimental group had significantly improved knowledge scores. Little change in attitude scale scores was noted in grades seven and eight, while ninth grade experimental students scored significantly higher on the posttest for all attitude scales. Little improvement was seen in the posttest food frequency scores.
Adolescent↗