id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-308383-j1gi1cxu	Xu, Jie	Associations of Stay-at-Home Order and Face-Masking Recommendation with Trends in Daily New Cases and Deaths of Laboratory-Confirmed COVID-19 in the United States	2020-07-08		.txt	text/plain	3512	198	56	METHODS: In this quasi-experimental interrupted time-series study, we modeled temporal trends in daily new cases and deaths of laboratory-confirmed COVID-19 cases, and COVID-19 time-varying reproduction numbers in the USA between March 1 and April 20, 2020. There were two turning points in daily new-case trend, being March 28 (slope-changes = −0.09) and April 3 (slope-changes = −0.09), which appeared to be associated with implementation of SAHO on March 28 (affecting 48.5% of the US population in 22 states and District of Columbia), and face-masking recommendation on April 3, respectively. CONCLUSIONS: We identified two turning points of COVID-19 daily new cases or deaths in the USA, which seem to be linked to implementation of SAHO and the Center for Disease Control's face-masking recommendation. The multivariable piecewise log-linear regression models identified two turning points of COVID-19 daily new cases and the time-varying reproduction number, Rt, in the USA, as well as the link between states' relationship with New York and COVID-19 epidemics.	./cache/cord-308383-j1gi1cxu.txt	./txt/cord-308383-j1gi1cxu.txt