PMC:7386785 / 64116-64448 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T558","span":{"begin":0,"end":84},"obj":"Sentence"},{"id":"T559","span":{"begin":85,"end":228},"obj":"Sentence"},{"id":"T560","span":{"begin":229,"end":332},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The lack of data on combinations of signs and symptoms is an important evidence gap. Consequently, there is no evidence on syndromic presentation and the value of composite signs and symptoms on the diagnostic accuracy measures. In addition, subgroup analyses by the pre‐defined variables were not feasible due to lack of reporting."}