Development of a Survey to Assess Diet and Activity Environments in the Home

描述（由申请人提供）：由于缺乏完善、全面的措施，对家庭环境如何影响儿童健康体重的了解有限。本研究的目的是开发HomeSTEAD，即家庭自我管理的活动和饮食环境评估工具，并为该工具得分的可靠性和推断的有效性提供证据。该提案来自一组经验丰富的研究人员，并将建立在该团队开发的初步家庭评估工具的基础上。最初的仪器是通过电话访谈和初步测试来管理的，虽然有希望，但确定了需要改进的地方。当前的项目包括三个目标。目的1包括开发候选项目，用于假设影响3-12岁儿童饮食和身体活动行为的家庭环境因素的自我管理测量。项目选择将参考我们的初步工具、现有项目和/或工具、已发表的文献和专家意见的数据。对于目标2，我们将最大限度地理解新开发的宅基地中的项目、术语和定义，在不同的父母样本中使用一对一的引导认知访谈（n=60），以确保我们对项目的意图与参与者的解释一致。对于目标3，我们将通过对至少有一个3-12岁儿童的种族多样化家庭样本（n=130）进行调查来检验新调查的信度和效度证据。指定的家长将完成三次调查：时间1-在研究人员上门观察前48小时内（有效）；时间2-与室内观察同时进行（信度）；时间3 -大约10天后（特征稳定性，可靠性）。传统的信度和效度估计（Kappa， ICC，相关性）将为每个项目计算，并使用方差分析评估试验之间的绝对一致性。对于家访中无法观察到的项目（如电视观看政策），将通过探索性和验证性因素分析来检验信度和效度。这个项目的成功完成将产生一个可靠和有效的自我管理调查，研究人员可以使用它来量化家庭环境的各个方面，这些方面可能会影响儿童的体重相关行为。公共卫生相关性：环境在儿童肥胖病因学中的作用已受到越来越多的关注。对于儿童来说，家庭是最接近和最有影响力的环境，提供了饮食和活动习惯发展的环境。然而，由于缺乏有效和可靠的评估工具，对家庭环境与饮食、活动和体重之间关系的理解受到了损害。拟议的HomeSTEAD工具将解决这一差距，并有助于阐明家庭和儿童肥胖之间的关系，并计划干预措施。

DESCRIPTION (provided by applicant): Knowledge of how the home environment affects children's healthy weight is limited by lack of well-developed, comprehensive measures. The objective of this research is to develop HomeSTEAD, the Home Self- administered Tool for Environmental assessment of Activity and Diet, and provide evidence for the reliability of scores and validity of inferences from this instrument. The proposal comes from a group of highly experienced researchers and will build off of a preliminary home assessment instrument developed by the team. The original instrument was administered via telephone interview and initial testing, though promising, identified areas for improvement. The current project includes three aims. Aim 1 consists of developing candidate items for a self-administered measure of home environmental factors hypothesized to impact diet and physical activity behaviors of children (age 3-12 y). Item selection will draw on data from our preliminary instrument, existing items and/or instruments, published literature, and expert opinion. For Aim 2, we will maximize comprehension of items, terms, and definitions in the newly developed HomeSTEAD using one-on- one guided cognitive interviews in a diverse sample of parents (n=60) to insure that our intention for an item agrees with participant interpretation. For Aim 3, we will examine reliability and validity evidence for the new survey by administering the survey to an ethnically diverse sample of families (n=130) with at least one child age 3-12y. A designated parent will complete the survey three times: Time 1- within 48 hours prior to the in- home observation by research staff (validity); Time 2- concurrent with the in-home observation (reliability); and Time 3 - approximately 10 days later (trait stability, reliability). Traditional estimates of reliability and validity (Kappa, ICC, correlation) will be calculated for each item and absolute agreement across trials evaluated using ANOVA. For items not feasible to observe during the home visit (e.g., policies for TV viewing), reliability and validity will be tested through exploratory and confirmatory factor analysis. Successful completion of this project will result in a reliable and valid self-administered survey that can be used by researchers to quantify aspects of the home environment that may influence weight-related behaviors in children. PUBLIC HEALTH RELEVANCE: The role of the environment in the etiology of child obesity has received increased attention. For children, the home is the most proximate and influential environment, providing the context in which eating and activity habits develop. However, understanding the relationship between home environment and diet, activity, and weight, is impaired by a lack of valid and reliable assessment tools. The proposed HomeSTEAD tool will address this gap and help elucidate the relationship between home and child obesity and plan interventions.