Objective: Motor vehicle crashes are a leading cause of injury death in the United States, and Memorial Day weekend is one of six holiday periods with an increased number of motor vehicle fatalities in the United States. However, few motor vehicle fatality comparisons were made between Memorial Day weekend and non-holiday periods. Our aims were to determine which day(s) during the holiday had highest motor vehicle fatality risk compared to nonholiday travel and to identify potential risk factors.
Results:Of 43,457 traffic fatalities studied, 15,292 (35%) occurred during the holiday, with Saturday being deadliest but Monday having highest odds of traffic fatality. Both sexes, all years, age < 65, drivers and passengers, rural and urban, and all regions in the United States were at increased risk during the holiday versus non-holiday periods.
This article examines how high-speed internet development across Chinese provinces affects firm employment and average annual wages. The authors exploit a national policy reform by which the government launched a project to improve internet speed in 2000 and devise a difference-in-differences with a continuous treatment method for empirical identification. The authors first find that high-speed internet significantly increases employment and slightly reduces average wages. Specifically, after one percentage point increase in the number of fixed-line users per capita at the province level, there is a 0.14 percent increase in firm employment and a 0.06 percent decrease in average wages, respectively. Also, this paper shows that the gains and losses from high-speed internet on firm performance are likely to have risen from the higher probability of firm entry and the improvement of productivity in existing firms. Third, the authors find rich heterogeneity across firm ownership, size, and regional characteristics.
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