Starnes Heather A, McDonough Meghan H, Tamura Kosuke, James Peter, Laden Francine, Troped Philip J
Int J Behav Nutr Phys Act. 2014 Oct 10;11:126. doi: 10.1186/s12966-014-0126-8.
Using validated measures of individuals' perceptions of their neighborhood built environment is important for accurately estimating effects on physical activity. However, no studies to date have examined the factorial validity of a measure of perceived neighborhood environment among older adults in the United States. The purpose of this measurement study was to test the factorial validity of a version of the Abbreviated Neighborhood Environment Walkability Scale (NEWS-A) modified for seniors in the Nurses' Health Study (NHS).
A random sample of 2,920 female nurses (mean age = 73 ± 7 years) in the NHS cohort from California, Massachusetts, and Pennsylvania completed a 36-item modified NEWS-A for seniors. Confirmatory factor analyses were conducted to test measurement models for both the modified NEWS-A for seniors and the original NEWS-A. Internal consistency within factors was examined using Cronbach's alpha. The hypothesized 7-factor measurement model was a poor fit for the modified NEWS-A for seniors. Overall, the best-fitting measurement model was the original 6-factor solution to the NEWS-A. Factors were correlated and internally consistent.
This study provided support for the construct validity of the original NEWS-A for assessing perceptions of neighborhood environments in older women in the United States.
使用经过验证的个体对其邻里建成环境的认知测量方法对于准确估计对身体活动的影响很重要。然而，迄今为止，尚无研究在美国老年人中检验邻里环境感知测量方法的因子效度。本测量研究的目的是检验在护士健康研究（NHS）中为老年人修改的简化邻里环境适宜步行量表（NEWS-A）版本的因子效度。
从加利福尼亚州、马萨诸塞州和宾夕法尼亚州的NHS队列中随机抽取2920名女性护士（平均年龄 = 73 ± 7岁），她们完成了一份针对老年人的36项修改版NEWS-A。进行验证性因子分析以检验老年人修改版NEWS-A和原始NEWS-A的测量模型。使用克朗巴哈系数检验各因子内部的一致性。假设的7因子测量模型与老年人修改版NEWS-A拟合度较差。总体而言，最佳拟合测量模型是NEWS-A的原始6因子解决方案。各因子相互关联且内部一致。
本研究为原始NEWS-A在美国老年女性中评估邻里环境感知的结构效度提供了支持。
