id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-336306-hvy9ukhh	Zhu, Jieyun	Clinical characteristics of 3,062 COVID‐19 patients: a meta‐analysis	2020-04-15		.txt	text/plain	2114	152	54	The inclusion criteria were as follows: (1) Cohort studies, case-control studies and case series studies; (2) The study population included individuals diagnosed with COVID-19; (3) The primary outcomes were: clinical symptoms, signs, laboratory and imaging results; the secondary outcomes were the incidence of respiratory failure(RF) or acute respiratory distress syndrome (ARDS), fatality rate, etc. The exclusion criteria were as follows: (1) Overlapping or duplicate studies; (2) The epidemiological analysis with only secondary outcomes such as fatality rate, without the primary outcomes; (3) Had no clinical indicators or lacking necessary data; (4) Case reports and studies with a sample size less than 10. After a detailed assessment based on the inclusion criteria, 38 studies involving 3 062 COVID-19 patients were included in this meta-analysis ( Fig. 1 ). There were 8 studies reported the incidence of RF or ARDS in COVID-19 patients.The random-effects model was used in the meta-analysis, which showed that the incidence of RF or ARDS was 19.5% (95%CI 5% -40.3%) ( Table 3 ).	./cache/cord-336306-hvy9ukhh.txt	./txt/cord-336306-hvy9ukhh.txt