Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
Am J Prev Med. 2018 Mar;54(3):423-429. doi: 10.1016/j.amepre.2017.10.024. Epub 2018 Jan 12.
This study examines relationships between perceived and observed nutrition environments, diet, and BMI, in order to examine the criterion validity of the Nutrition Environment Measures Survey-Perceived (NEMS-P).
In a cross-sectional study, perceived nutrition environments were assessed (NEMS-P) among 221 adults from four neighborhoods in the Philadelphia area in 2010 and 2011. A total of 158 food store environments were observed using the NEMS-Stores. Data analyses were conducted in 2016. Bivariate Spearman rank correlations were used to examine relationships between perceived and observed availability, quality, and price of fruits and vegetables in respondents' neighborhoods. Linear regression models were used to examine relationships between perceived neighborhood and home food environments and daily fruit and vegetable consumption and BMI.
A significant, positive relationship was found between perceived and observed availability of fruits and vegetables in the neighborhood (r = 0.36, p<0.001). A similar relationship was seen between perceived and observed quality of fruits and vegetables (r = 0.34, p<0.001). Perceived availability and quality of fruits and vegetables in the neighborhood, and availability and accessibility of fruits and vegetables in the home, were significantly related to daily fruit and vegetable consumption. Perceived price of food in the neighborhood was significantly associated with BMI.
Responses to a self-reported survey to assess perceived food environments related to fruits and vegetables were significantly associated with observed nutrition environments, fruit and vegetable consumption, and BMI. The perceived prices of fruits and vegetables were modestly associated with BMI and warrant further testing in prospective studies. When observations of food environments are not feasible, residents' survey responses are an acceptable indicator, with reasonable criterion validity.
本研究旨在探讨感知和观察到的营养环境、饮食与 BMI 之间的关系，以检验营养环境测量工具-感知量表（NEMS-P）的效标效度。
在 2010 年至 2011 年期间，对来自费城四个社区的 221 名成年人进行了横断面研究，评估了他们对感知营养环境（NEMS-P）的感知。共使用 NEMS-Stores 观察了 158 个食品店环境。数据分析于 2016 年进行。采用双变量 Spearman 秩相关分析来检验受访者所在社区感知和观察到的水果和蔬菜的可得性、质量和价格之间的关系。采用线性回归模型来检验感知社区和家庭食物环境与每日水果和蔬菜摄入量以及 BMI 之间的关系。
发现社区中水果和蔬菜的感知可得性与观察到的可得性之间存在显著的正相关关系（r = 0.36，p<0.001）。社区中水果和蔬菜的感知质量与观察到的质量之间也存在类似的关系（r = 0.34，p<0.001）。社区中水果和蔬菜的感知可得性和质量以及家庭中水果和蔬菜的可得性和可及性与每日水果和蔬菜的摄入量显著相关。社区中食物的感知价格与 BMI 显著相关。
评估感知食物环境的自我报告调查的应答与观察到的营养环境、水果和蔬菜的摄入量以及 BMI 显著相关。感知的水果和蔬菜价格与 BMI 呈中度相关，值得在前瞻性研究中进一步测试。当观察食物环境不可行时，居民的调查应答是一个可接受的指标，具有合理的效标效度。
