Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA.
Int J Behav Nutr Phys Act. 2008 Apr 29;5:24. doi: 10.1186/1479-5868-5-24.
Little is known about how the home environmental supports physical activity and screen media usage. The purpose of this study was to develop and test the reliability and validity of a self-report instrument to comprehensively reflect the availability and accessibility of physical activity and screen media equipment in the home environment.
Ten families participated in the initial field testing to provide feedback for instrument development. Thirty one adult participants, each of whom had at least one child 10-17 years old, completed two Physical Activity and Media Inventory (PAMI) instruments. The first PAMI was completed simultaneously, but independently, with a research assistant to assess validity. A second PAMI was completed by the participant one week later to assess reliability.
The adult participants were mostly mothers/female guardians, mean age 38 +/- 7.2 years, mostly Caucasian (52%), college educated (65%), living in single family homes (74%). Test-retest reliability was acceptable to strong for all summary variables (physical activity equipment, ICC = 0.76 to 0.99; media equipment, ICC = 0.72 to 0.96). For validation, reports from participants and research assistants were strongly correlated (physical activity, 0.67 - 0.98; media, 0.79 - 0.96). Compared to participants, research assistants reported a greater percentage of physical activity equipment as "in plain view and easy to get to" and a smaller percentage of items as "put away and difficult to get to".
Our results indicate strong evidence for the reliability and validity of the variables calculated from the PAMI. This self report inventory may be useful in assessing the availability of physical activity and screen media equipment in the home environment and could be used in conjunction with other home assessment tools (food availability, parenting styles and feeding practices) to identify obesogenic home environments.
对于家庭环境如何支持身体活动和屏幕媒体使用，我们知之甚少。本研究的目的是开发和测试一种自我报告工具，以全面反映家庭环境中身体活动和屏幕媒体设备的可用性和可及性，并检验其信度和效度。
10 个家庭参与了初始现场测试，为工具开发提供反馈。31 名成年参与者，每个参与者至少有一个 10-17 岁的孩子，他们完成了两份《身体活动和媒体清单》（PAMI）。第一份 PAMI 是与研究助理同时独立完成的，以评估有效性。第二份 PAMI 由参与者在一周后完成，以评估信度。
成年参与者主要是母亲/女性监护人，平均年龄 38 +/- 7.2 岁，大多为白人（52%），受过大学教育（65%），居住在单户住宅（74%）。所有汇总变量的重测信度均为可接受至强（身体活动设备，ICC = 0.76 至 0.99；媒体设备，ICC = 0.72 至 0.96）。对于验证，参与者和研究助理的报告呈强相关（身体活动，0.67 - 0.98；媒体，0.79 - 0.96）。与参与者相比，研究助理报告称更多的身体活动设备“易于看到和取用”，而较少的设备“收起来难以取用”。
我们的结果表明，从 PAMI 计算得出的变量具有较强的信度和效度证据。这种自我报告清单可能有助于评估家庭环境中身体活动和屏幕媒体设备的可用性，并且可以与其他家庭评估工具（食物供应、育儿风格和喂养实践）结合使用，以确定肥胖易感的家庭环境。
