An observational study in Adolescent Nutrition, Eating Behaviors and Nutritional Inequalities, sponsored by Dursun Alper YILMAZ. Completed at 1 site in Turkey (Türkiye). Open to participants aged 14 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-09-26.
Sponsored by Dursun Alper YILMAZ · Observational
This study examines differences in nutrition and eating behaviors among adolescents living in two regions of Türkiye with contrasting socioeconomic and cultural conditions. A total of 100 adolescents aged 14-18 years were recruited from high schools in Ağrı (Eastern Türkiye) and Kırklareli (Western Türkiye). Participants completed dietary recalls, the Healthy Nutrition Behavior Scale, and the Eating Attitudes Test (EAT-26). The study aims to understand how regional inequalities influence nutrient intake and eating behaviors. Findings may help guide future public health strategies to improve adolescent nutrition across different regions of Türkiye.
Adolescence is a critical developmental stage where nutritional habits are formed and often persist into adulthood. Nutritional inequalities in Türkiye are shaped by socioeconomic and cultural disparities between regions. This cross-sectional observational study was conducted between April and June 2025 in two provinces representing distinct socioeconomic contexts: Ağrı in Eastern Türkiye and Kırklareli in Western Türkiye.
A total of 100 adolescents (50 from each province) aged 14-18 years participated voluntarily. Dietary intake was assessed using 24-hour dietary recalls, and nutrient composition was analyzed with the BeBiS v9.0 software. Healthy eating behaviors were measured with the Healthy Nutrition Behavior Scale (HNBS), and disordered eating attitudes were evaluated with the Eating Attitudes Test (EAT-26).
The primary objective was to compare nutrient intake, healthy eating behaviors, and eating attitudes between the two provinces. Secondary analyses examined whether dietary patterns predicted psychosocial outcomes. Statistical methods included linear mixed-effects models, multivariate analysis of covariance, and principal component regression, adjusting for demographic and socioeconomic covariates.
Ethical approval was obtained from the Ağrı İbrahim Çeçen University Scientific Research and Publication Ethics Committee (Decision No: 112, March 27, 2025). All participants and their guardians provided informed consent.
This study is expected to generate evidence on regional nutritional disparities among adolescents in Türkiye. Results may inform dual public health strategies: (i) improving access to nutrient-dense foods in disadvantaged regions and (ii) addressing over-nutrition and processed food consumption in more affluent regions.
218 studies on the registry are indexed under Feeding Behavior; 95 are open to participants now.
This study's enrollment of 100 is below the median of 145 across 54 observational studies indexed under Feeding Behavior.
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Adolescents aged 14-18 years attending secondary and high schools in Ağrı (Eastern Türkiye) and Kırklareli (Western Türkiye). Participants were recruited using a two-stage stratified cluster sampling design to reflect urban/rural and school-type diversity.
Adolescents aged 14-18 years
Residing in the study province (Ağrı or Kırklareli) for at least 5 years
Enrolled in selected secondary or high schools
Provided written informed consent (self and parent/guardian)
Exclusion Criteria:
Presence of chronic disease affecting diet (e.g., diabetes, celiac disease)
Currently receiving medical nutrition therapy or weight management interventions
Incomplete dietary recall or questionnaire data
Adolescents selected from secondary and high schools in Kırklareli, Türkiye. Observational data collection included 24-hour dietary recall, Healthy Nutrition Behavior Scale (HNBS), and Eating Attitudes Test (EAT-26). No intervention was applied
Adolescents selected from secondary and high schools in Ağrı, Türkiye. Observational data collection included 24-hour dietary recall, Healthy Nutrition Behavior Scale (HNBS), and Eating Attitudes Test (EAT-26). No intervention was applied
Eating Attitudes (EAT-26)
Scores on the Eating Attitudes Test-26 (EAT-26), a validated screening tool for disordered eating attitudes in adolescents
Time frame: Cross-sectional, single assessment (April-June 2025).
Healthy Nutrition Behavior Score (HNBS)
Scores on the Healthy Nutrition Behavior Scale (HNBS), a validated 20-item instrument for adolescents. Each item is rated on a 5-point Likert scale (1=never to 5=always). Higher total scores indicate healthier nutrition behaviors.
Time frame: Single cross-sectional assessment at baseline (April-June 2025).
Nutrient Intake (24-hour recall)
Energy and nutrient intake (e.g., protein, fat, carbohydrates, vitamins, minerals) based on a 24-hour dietary recall and analyzed using BeBiS v9.0 software.
Time frame: Cross-sectional, single assessment (April-June 2025).
Plan to share: No — Individual participant data (IPD) will not be shared because the study involved a small sample of adolescents, and data include sensitive information on dietary habits and eating attitudes. To protect participant confidentiality, only aggregated results will be published.
This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.
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Dursun Alper YILMAZ