id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-274343-y9zqbefu	Petersen, Irene	Three Quarters of People with SARS-CoV-2 Infection are Asymptomatic: Analysis of English Household Survey Data	2020-10-08		.txt	text/plain	2197	151	57	We estimated sensitivity, specificity, the proportion of asymptomatic cases (1 – sensitivity), positive predictive value (PPV) and negative predictive value (NPV) of COVID-19 symptoms as a marker of infection using results of the SARS-CoV-2 test as the "gold standard". 8 In this analysis of data from a large representative study by the English Office for National Statistics we aimed to understand the value of COVID-19 symptoms as a marker for SARS-CoV-2 infection. We estimated the sensitivity, specificity, positive and negative predictive values of COVID-19 symptoms for SARS-CoV-2 infections as well as the proportion of asymptomatic cases (1 -sensitivity). We estimated the sensitivity, specificity, and positive and negative predictive values of COVID-19 symptoms as a marker of infection by using the results of the SARS-CoV-2 test as the "gold standard". To our knowledge, the Office for National Statistics Coronavirus (COVID-19) Infection Survey pilot is the largest population survey carried out to date including information on the association between COVID-19 symptoms and SARS-CoV-2 test results.	./cache/cord-274343-y9zqbefu.txt	./txt/cord-274343-y9zqbefu.txt