Structural Validity and Internal Consistency of the Brazilian Portuguese Diabetes Eating Problem Survey–revised in Adolescents With Type 1 Diabetes
This study validates the Brazilian Portuguese version of the Diabetes Eating Problem Survey–Revised for adolescents with type 1 diabetes, confirming its good internal consistency and clinical relevance for total score screening while noting that its underlying factor structure remains ambiguous and subscales require further replication before use.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Living with type 1 diabetes is a constant, demanding negotiation. For a teenager, it means checking blood sugar, calculating insulin doses, and counting carbohydrates before every meal, all while navigating the intense physical and emotional changes of growing up. This relentless focus on food and body weight can sometimes blur the line between necessary medical management and unhealthy obsession. When a young person begins to restrict insulin to lose weight, skip meals, or feel guilty about eating, they are entering a dangerous territory known as disordered eating. This behavior is not just a matter of willpower; it is a serious medical complication that can lead to severe health crises and long-term damage. Because the signs can be subtle and hidden within the daily routine of diabetes care, doctors and psychologists need reliable tools to spot these problems early. They need a way to ask the right questions and get honest answers without confusing normal teenage worries with dangerous patterns.
To meet this need, researchers have developed a specific questionnaire called the Diabetes Eating Problem Survey–Revised. This tool is designed to be short and direct, asking adolescents about their thoughts and behaviors regarding food, weight, and insulin over the past month. It is meant to act as a screening net, catching those who might need deeper help. While this survey has been used in many countries, its effectiveness depends on whether the questions work the same way in different languages and cultures. A team of researchers in Brazil set out to test the Brazilian Portuguese version of this survey among 175 teenagers with type 1 diabetes. Their goal was not just to see if the questions were understood, but to determine if the survey actually measures what it claims to measure. They wanted to know if the 16 questions form a single, unified picture of disordered eating, or if they break down into separate, distinct groups of problems that need different interpretations.
The researchers gathered their data in a specialized clinic in northeastern Brazil, where they asked the teenagers to fill out the survey during their regular visits. They also looked at medical records to see how the survey scores matched up with real-world health indicators, specifically the level of sugar in the blood over time and the teenager's body weight relative to their age. The results showed that the survey is a reliable tool for getting a general sense of a teenager's struggles. When the scores from all 16 questions were added together, they showed a strong internal consistency, meaning the questions hung together well as a single measure. Furthermore, the total score made sense clinically: teenagers with higher scores tended to have higher blood sugar levels and higher body weight indices, which aligns with what medical experts expect to see when disordered eating is present.
However, when the team looked deeper into the structure of the survey, the picture became less clear. They tested whether the questions fit into a single category of "eating problems" or if they grouped into three specific categories as previous studies had suggested. The data did not support a simple single category, nor did it cleanly support the three separate groups found in other languages. Instead, the analysis suggested that the questions might actually fall into two overlapping areas: one focused on concerns about weight and using insulin to control it, and another focused on general difficulties with eating habits and managing the disease. Even then, the lines between these two areas were blurry, with several questions fitting into both groups at the same time. This lack of a clear, distinct structure means that while the total score is useful, breaking the survey down into smaller, specific subscales for the Brazilian context is not yet recommended.
The study also highlighted a practical reality of working with teenagers: many of the most severe behaviors, such as forcing oneself to vomit or deliberately keeping blood sugar dangerously high, were rarely reported. This is not surprising, as these are extreme actions, but it creates a statistical challenge where many questions have answers clustered at the very bottom of the scale. Despite this, the researchers found that the survey remains a valuable first step. It provides a coherent total score that can help clinicians identify which teenagers need further conversation and assessment. The authors caution that a high score is a signal to talk, not a final diagnosis, and that the specific breakdown of the questions into sub-scores should not be used until more research confirms how they work in Brazil. For now, the tool serves its purpose as a broad screen, helping medical teams navigate the complex intersection of diabetes management and mental well-being with greater confidence.
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