id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-103972-kbv9kh6z	Singer, Gregor	Air Pollution Increases Influenza Hospitalizations	2020-04-10		.txt	text/plain	5580	324	55	We show robustness to (i) different weather controls, (ii) additional fixed effects, (iii) multilevel clustering of standard errors, (iv) different winsorization and interpolation of the raw AQI data, (v) including out-state patients at hospitals, (vi) focusing on states with a long time series only, (vii) using missing values instead of zeros for county-months with no hospital admissions, and (viii) using a linear ordinary least squares instead of a Poisson Pseudo-Maximum Likelihood estimator. We use the standard deviation of the AQI during the influenza season (12.79) as well as the average inpatient hospitalization numbers (3.01) for the calculation of absolute effects based on our Poisson Pseudo-Maximum Likelihood estimation. We estimate the relationship between influenza-related inpatient hospitalizations H cym and the lagged air quality index AQI cym−1 at the county c by calendar month m by year y level using a Poisson model:	./cache/cord-103972-kbv9kh6z.txt	./txt/cord-103972-kbv9kh6z.txt