Population decline and changes in food store access
研究了2000-2013年瑞典社区层面食品店距离的变化，发现距离在乡村和富裕社区增加，且与人口密度变化负相关，增长区域的影响更显著。
I examine how neighbourhood-level food store access, proxied by distance to the nearest food store, changed in Sweden between 2000 and 2013, and how this change is correlated with changes in potential market size, proxied by population density. I find that distance has increased in rural and more affluent neighbourhoods. Furthermore, an increase in distance is negatively correlated with an increase in population density and is most pronounced in rural areas. The results are driven by the growing, rather than the declining, regions. Since the latter have often been a target for subsidies over the years, this could suggest that the aid may have had an impact.