Gay Jennifer L, Smith Jessalyn
University of Texas School of Public Health, Brownsville, TX 78520, USA.
Am J Health Behav. 2010 Jul-Aug;34(4):420-31. doi: 10.5993/ajhb.34.4.4.
To examine the construct validity and reliability of existing self-report items measuring perceptions of the built environment for physical activity.
Exploratory factor analysis, internal consistency, and nonparametric scaling were assessed using data from a cross-sectional sample of adults (n = 479).
A new 5-factor model was identified. Internal consistency and scaling reliabilities were moderate to strong, providing support for the new structure.
Further studies are needed to confirm these results. Subscales should be treated as indices and use sum scores in analysis to detect subtle variations and provide more precise power calculations.
检验现有用于测量对体育活动建筑环境感知的自陈式条目（self-report items）的结构效度和信度。
使用来自成年人横断面样本（n = 479）的数据评估探索性因素分析、内部一致性和非参数标度法。
确定了一个新的五因素模型。内部一致性和标度信度为中度到高度，为新结构提供了支持。
需要进一步研究来证实这些结果。分量表应作为指标看待，并在分析中使用总分来检测细微差异并提供更精确的功效计算。
