URBAN SPRAWL, OBESOGENIC ENVIRONMENT, AND CHILD WEIGHT
利用1979年全国青年纵向调查及其子女调查数据，研究了美国都市县的城市蔓延与儿童体重指数之间的关系，发现城市蔓延与儿童BMI正相关，而距离大都市的距离与儿童BMI负相关，这些效应在女孩和中学/高中儿童中更为明显。
ABSTRACT Using the 1979 National Longitudinal Survey of Youth along with the child survey, we examine the relationship between urban sprawl of U.S. metro counties and the body mass index (BMI) of children who reside in these counties. We make a distinction between urban sprawl in a county and its geographical placement in the urban hierarchy. Even after accounting for unobserved individual heterogeneity and resulting selection bias, we find that urban sprawl is positively related to child BMI and distance to large metros is negatively related to child BMI. These effects are somewhat pronounced among girls and middle/high school children.