PMC:7095437 / 11559-11646 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T80","span":{"begin":11,"end":16},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"},{"id":"T81","span":{"begin":35,"end":40},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"Chi-square tests or Fisher’s exact tests were applied to compare categorical variables."}

{"project":"LitCovid-sentences","denotations":[{"id":"T76","span":{"begin":0,"end":87},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Chi-square tests or Fisher’s exact tests were applied to compare categorical variables."}