id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-281354-sa27k8o3	Takahashi, Harutaka	Role of Latent Tuberculosis Infections in Reduced COVID-19 Mortality: Evidence from an Instrumental Variable Method Analysis	2020-08-26		.txt	text/plain	1439	89	47	title: Role of Latent Tuberculosis Infections in Reduced COVID-19 Mortality: Evidence from an Instrumental Variable Method Analysis However, these studies ignore an important fact: according to World Health Organization estimates, about a quarter of the world's population may have latent tuberculosis infection (LTBI), a condition in which there is no evidence of clinically active tuberculosis but persistent immune responses are stimulated by Mycobacterium tuberculosis antigens. However, such studies ignore the important fact that about one-quarter of the world's population may have latent TB infection (LTBI), a condition in which there is no evidence of clinically active TB but persistent immune responses are stimulated by Mycobacterium tuberculosis antigens. As explained above, the logarithm of the number of TB infections per 100,000 individuals (lntb10) can be used as a proxy variable for LTBIs. For this regression analysis to be statistically accurate, the explanatory variable X must first be correlated with the error term u (i.e., the covariance of X and u must be zero).	./cache/cord-281354-sa27k8o3.txt	./txt/cord-281354-sa27k8o3.txt