Developing a strategy for understanding adolescent nutrition concerns.

Disseminating nutrition information that adolescents will incorporate into their lives has been a difficult challenge for nutrition educators. The communication of such information has often been a "one-way street"; adolescents are given information that educators feel they need to have. Researchers contend that a more effective way to communicate is for adolescents to describe what they need to know in order to relate nutrition messages to their own worlds. A research model based on Brenda Dervin's work with the "sense-making" theory of communication was used to better determine adolescents' perceived nutrition concerns. Adolescents aged 14 to 16 across six states were interviewed to record personal situations they experienced concerning food, nutrition, and/or eating. Situation "movement states" were identified to determine the qualitative ways in which the adolescents perceived themselves as dealing with the situations they described. Data indicate that this theoretical base may be used by nutrition educators to identify adolescents' nutrition needs and to design appropriate education materials.

The sense-making approach for audience assessment of adolescents.

The purpose of the research was to test the methodology used to identify how adolescents approach their nutrition concerns and questions. The methodology was based on Dervin's sense-making theory. Using a time-line interview technique, 305 adolescents 14 to 16 years of age detailed a situation involving their most important nutrition concerns. Other pertinent information was obtained. Cluster analysis was chosen as the appropriate analysis to identify groups of adolescents who responded similarly to the technique. Discriminant analysis was then used to determine which variables maximally separated the groups. Four groups were identified, two of which described action-oriented approaches to dealing with nutrition situations and differed in terms of how much outside help they wanted. The remaining two groups perceived barriers to dealing with situations and also differed in how much help they wanted. A fifth group indicated no nutrition concerns or questions. The results will be used to develop and test the effectiveness of nutrition education when it is focused on the different approaches.

Impact of commercial eating on nutrient adequacy.

The purpose of this study was to investigate the impact of eating away from home (at commercial establishments) on nutrient adequacy by examining frequency of eating away from home, the nutritional value of foods eaten both away and at home, and the nutritional adequacy of the daily diets of individuals. Data from 3,500 individuals, 15 years of age or older, interviewed in the fall quarter of the 1977-78 Nationwide Food Consumption Survey were used. Results indicate that although the nutrient density of food eaten away from home was lower than that of food eaten at home, the persons studied did not eat out frequently enough to influence the adequacy of their diets significantly. The low nutrient density of food eaten away from home does suggest, however, that individuals could be putting themselves at risk of some nutrient inadequacies (particularly of calcium and vitamins A, B-6, and C) or of caloric excess if they substantially increase their frequency of eating away from home. Teenagers and senior citizens seem most vulnerable to potential nutritional inadequacies.

Evaluation of the Nutrient Guide as a dietary assessment tool.

The purpose of this study was to evaluate the validity of the Nutrient Guide as a quantitative estimate of dietary adequacy. Using 24-hour dietary recalls of 300 men, food group and overall diet scores based on the Nutrient Guide were compared with nutrient adequacy ratios for eight nutrients and a mean adequacy ratio derived from nutrient analysis. Caloric, fat, and sodium intakes estimated using Nutrient Guide ratings were also compared with nutrient Nutrient Guide ratings were also compared with nutrient analysis estimates. Correlations between food group scores and nutrient adequacy ratios were all positive and significant. Regression analyses revealed a strong linear relationship between caloric, fat, and sodium intakes estimated by the two methods and a curvilinear relationship between mean adequacy ratio and total diet score. These results suggest that the Nutrient Guide can be used to provide a reasonable estimate of adequacy for the nutrients upon which the guide is currently based. Food group and total diet scores in either the upper or lower ends of the score ranges seemed to be better predictors of individual nutrient or overall dietary adequacy than did mid-range scores, which slightly underestimated dietary adequacy of the selected nutrients.