Quality of Life of Overweight Youth: Multicultural View

目标：开发一种针对超重青年的多元文化生活质量（QoL）工具，用于 评估体重管理治疗和调查环境和心理社会协会。 目的：1）开发美国英语和墨西哥-美国西班牙语的体重特异性QoL工具， 对非裔美国人、高加索人和墨西哥裔美国青年进行深入访谈和焦点小组讨论 11-18在西部华盛顿和南部加州; 2）验证横断面心理测量和 使用经典的心理测量和 IRT分析; 3）探索BMI与QoL以及已知或假设的相关性的关联，4） 评估项目和措施是否有能力在一小群参与的青年中发现变化， 参与正式的减肥计划，以及5）制作/传播仪器的最终版本。 重要性：近年来白人青年超重状况增加了两倍， 在少数民族青年中，主要是墨西哥裔美国人和非洲裔美国人， 美国人少数民族青少年超重的不成比例的增加可能会加剧先前存在的 健康结果的差异，并需要创新的办法来了解他们的观点， 设计和评估有效的治疗方法，以减少健康差距。 创新：应在主要受影响文化群体的充分参与下制定生活质量指标 针对体重治疗。不同民族文化同步发展措施 与多元文化研究者的合作将满足这一要求。 方法和分析：基于定性方法的综合概念模型将推动 测量发展。深入访谈和焦点小组与120超重和高危青少年将 采用基于需求的模式和对文化敏感的方法来开发工具。一代 英语和西班牙语的项目以及认知汇报、可读性和可译性分析将 进行。将对360名青年（200名BMI 2> 95%，80名BMI 85-94%; 80名BMI z 84%）进行验证。 被招募的人将填写新的体重特定工具和其他问卷。因子分析 和项目反应方法将用于量表开发。信度、结构效度、 在一个小的队列中的效果大小，和与BMI的关联将被检查。功率估计在 使用单变量和多变量建模，77-99%检测到效应量为0.41或更大的差异 调查已知的和假设的相关性。 研究者：由经验丰富的结局专家、肥胖专家、内分泌学家和 社区代理人将合作招募、研究、出版和传播成果。

Goal: To develop a multicultural quality of life (QoL) instrument specific to overweight youth for use in evaluating weight-management treatments and investigating environmental and psychosocial associations. Aims: 1) To develop a weight-specific QoL instrument in US English and Mexican-American Spanish using in-depth interviews and focus groups with African-American, Caucasian, and Mexican-American youth ages 11-18 in Western Washington and Southern California; 2) To validate cross-sectional psychometric and practical measurement properties of the new weight-specific instrument using classical psychometric and IRT analyses; 3) To explore associations of BMI with QoL and known or hypothesized correlates, 4) To assess the ability of the items and measures to detect change in a small cohort of youth participating and not participating in a formal weight loss program, and 5) To produce/disseminate final version of the instrument. Significance: The two-fold increase in overweight status among Caucasian youth in recent years is only overshadowed by the three-fold increases among minority youth, primarily Mexican-Americans and African- Americans. This disproportionate increase in overweight among minority youth may exacerbate pre-existing health outcome disparities and require innovative approaches to understanding their perspectives and to design and evaluate effective treatments that will reduce health disparities. Innovation: A QoL measure should be developed with full participation of the major affected cultural groups targeted for weight treatment. Simultaneous cultural development of measures in different ethnic groups with multicultural investigators in this study will meet this requirement. Methods and Analysis: A comprehensive conceptual model grounded in qualitative methodology will drive measurement development. In-depth interviews and focus groups with 120 overweight and at-risk youth will apply a needs-based model and culturally sensitive approach to instrument development. Generation of items in English and Spanish and cognitive debriefing, readability, and translatability analyses will be conducted. A validation sample of 360 youth (200 BMI 2> 95%, 80 BMI 85-94%; 80 BMI z 84%) will be recruited who will complete the new weight-specific instrument and other questionnaires. Factor analysis and item-response methods will be used for scale development. Evaluation of reliability, construct validity, effect sizes in a small cohort, and association with BMI will be examined. Power is estimated to be between 77-99% to detect differences with an effect size of .41 or greater using univariate and multivariate modeling to investigate known and hypothesized correlates. Investigators: Multicultural team of experienced outcomes experts, obesity experts, endocrinologists, and community agents will collaborate to recruit, study, publish, and disseminate results.