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| Author(s): |
Ágatha Nogueira Previdelli
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Saúde Pública (FSP/CIR) |
| Defense date: | 2013-02-19 |
| Examining board members: |
Regina Mara Fisberg;
Daniel Henrique Bandoni;
Nágila Raquel Teixeira Damasceno;
Rosângela Alves Pereira;
Daniela Saes Sartorelli
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| Advisor: | Dirce Maria Lobo Marchioni |
| Abstract | |
Background: Adolescent dietary patterns have been associated with increased risk factors for chronic diseases, including diabetes, coronary heart disease and cancer. Objectives: To evaluate the dietary patterns among adolescents living in the municipally of São Paulo. Methods: Data of adolescents from a cross-sectional survey were analyzed. Two different approaches were used to evaluate the dietary patterns: the Brazilian Healthy Eating Index Revised (BHEI-R) and the factors analysis. To estimate the usual intake, it was collected a minimum of one and a maximum of five 24-hour dietary recall (24HR), in which the first one was obtained in the adolescents home, together with a Food Frequency Questionnaire (FFQ), and the others records were collected by phone. In the first approach, the method proposed by the American National Cancer Institute was used to estimate the distribution of the components of the BHEI-R, according to the usual intake and adjusted by the sociodemographic, anthropometric and lifestyle characteristics. To access the dietary patterns using the factor analysis, initially, the usual intake that was estimated by the Multiple Source Method. Beside the 24HR data, the FFQ was used as covariate information to improve the modeling of consumption probability and intake amount. After the factor analysis, multivariate linear regressions models identified the characteristics associated with the dietary patterns. Results: The estimated mean BHEI-R score (47.1 points), adjusted for gender and family heads schooling, was, being similar between males (46.3) and females (48.0). The results indicated lower consumption of Whole grains (0.3), Total vegetables (1.0), Total fruit (1.3) and Whole fruit (0.4); and higher intake Sodium (2.2), Saturated fat (5.8) and; SoFAAS (4.5), that comprise the calories from solid fat, alcohol intake and added sugar. The factor analysis identified two dietary patterns that together explained 17.1 per cent of the total variation in food intake. The Traditional diet, characterized by the consumption of beans, rice, coffee/tea, sugar, butter/margarine, beef and cookies, was inversely associated with be male, higher income and higher family heads schooling. The Dual diet, characterized by the consumption chocolate powder, vegetables, whole milk, salada dressings, cheeses, processed meats/cold cuts, breads/toasts/crackers, candies, juices and white meat (chicken and fish), was directly associated with higher income, family heads marital status (living with someone) and higher family heads schooling. Conclusion: The adolescents have lower dietary fiber intake, especially fruits and whole grains and higher intake of sodium, fats and sugars. Thus, the results of the two approaches provide consistent and complementary information about the adolescent dietary behavior that can be used to the development of public health programs, in order to prevent and treat dietrelated chronic diseases throughout the life course (AU) | |
| FAPESP's process: | 10/01983-0 - Dietary patterns of adolescents living in the city of São Paulo and their associated factors: a population base study using a priori and a posteriori analysis |
| Grantee: | Ágatha Nogueira Previdelli |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |