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标题：Geographic Clustering of Fast-Food Restaurants Around Secondary Schools in Hong Kong
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作者：Jason Tsz Him Cheung ; Ka Chung Tang ; Keumseok Koh 等
期刊名称：Preventing Chronic Disease
印刷版ISSN：1545-1151
出版年度：2021
卷号：18
页码：1
DOI：10.5888/pcd18.200601
出版社：Centers for Disease Control and Prevention
摘要：INTRODUCTION :Clustering of fast-food restaurants around schools facilitates fast-food consumption among students, which may cause obesity. We examined the prevalence of fast-food restaurants and identified the clusters of fast-food restaurants near secondary schools in Hong Kong. METHODS :We collected data of Western fast-food chain restaurants and 490 secondary schools in Hong Kong. Descriptive statistics and buffer analysis identified the prevalence of fast-food restaurants around the secondary schools within 400-m and 800-m buffers. Additional analyses compared schools stratified by the 3 main regions in Hong Kong, district-level population density, and median monthly household income. We used Getis-Ord GI* hot spot analysis to measure spatial clusters of fast-food restaurants around schools and Global Moran's I to measure the spatial autocorrelation based on each school and the number of fast-food restaurants within the 400-m buffer. RESULTS :The average number of fast-food restaurants within 400 m and 800 m of a school was 2.0 and 6.3, respectively. Seven in 10 secondary schools had at least 1 fast-food restaurant within 400 m. The number of schools with no fast-food restaurants was higher in Hong Kong Island, considered the "rich region" in Hong Kong. Hot spots of clusters were significantly located in the high-density downtown areas. We observed significant spatial autocorrelation between fast-food restaurants and secondary schools in the areas with high density, low income, and high income (P 2.58). CONCLUSION :Fast-food restaurants were substantially clustered around secondary schools in Hong Kong. Territory-wide studies about the health effect of fast-food clusters around schools on children and adolescents are warranted in Hong Kong.