Do Neighborhood Parks and Playgrounds Reduce Childhood Obesity?
基于2007年全国儿童健康调查数据，使用协变量匹配估计量发现社区公园和游乐场对儿童肥胖有显著影响，且效果因性别、年龄、种族、家庭收入、社区安全等因素而异。
Abstract Using the 2007 National Survey of Children's Health data, we find a statistically and economically significant effect of neighborhood parks and playgrounds on childhood obesity based on covariate matching estimators. The park/playground effect depends on gender, age, race, household income, neighborhood safety, and other neighborhood amenities. The results suggest that adding a neighborhood park/playground may reduce the obesity rate and make children more fit, but relevant interventions must consider socioeconomic status of the targeted children as well as other neighborhood amenities.