PMC:7780429 / 810-1207 JSONTXT

{"project":"LitCovid-PD-HP","denotations":[{"id":"T3","span":{"begin":122,"end":130},"obj":"Phenotype"},{"id":"T4","span":{"begin":152,"end":160},"obj":"Phenotype"},{"id":"T5","span":{"begin":378,"end":384},"obj":"Phenotype"}],"attributes":[{"id":"A3","pred":"hp_id","subj":"T3","obj":"http://purl.obolibrary.org/obo/HP_0002315"},{"id":"A4","pred":"hp_id","subj":"T4","obj":"http://purl.obolibrary.org/obo/HP_0002315"},{"id":"A5","pred":"hp_id","subj":"T5","obj":"http://purl.obolibrary.org/obo/HP_0002099"}],"text":" 208 (79.7%) used surgical masks and 53 (20.3%) used filter masks. Of all those surveyed, 158 (51.6%) presented ‘de novo’ headache. The occurrence of a headache was independently associated with the use of a filter mask, OR 2.14 (95% CI 1.07 to 4.32); being a nurse, OR 2.09 (95% CI 1.18 to 3.72) or another health worker, OR 6.94 (95% CI 3.01 to 16.04); or having a history of asthma, OR 0.29 (95"}

{"project":"LitCovid-PubTator","denotations":[{"id":"23","span":{"begin":122,"end":130},"obj":"Disease"},{"id":"24","span":{"begin":152,"end":160},"obj":"Disease"},{"id":"25","span":{"begin":378,"end":384},"obj":"Disease"}],"attributes":[{"id":"A23","pred":"tao:has_database_id","subj":"23","obj":"MESH:D006261"},{"id":"A24","pred":"tao:has_database_id","subj":"24","obj":"MESH:D006261"},{"id":"A25","pred":"tao:has_database_id","subj":"25","obj":"MESH:D001249"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}],"text":" 208 (79.7%) used surgical masks and 53 (20.3%) used filter masks. Of all those surveyed, 158 (51.6%) presented ‘de novo’ headache. The occurrence of a headache was independently associated with the use of a filter mask, OR 2.14 (95% CI 1.07 to 4.32); being a nurse, OR 2.09 (95% CI 1.18 to 3.72) or another health worker, OR 6.94 (95% CI 3.01 to 16.04); or having a history of asthma, OR 0.29 (95"}

{"project":"LitCovid-sentences","denotations":[{"id":"T12","span":{"begin":1,"end":66},"obj":"Sentence"},{"id":"T13","span":{"begin":67,"end":131},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" 208 (79.7%) used surgical masks and 53 (20.3%) used filter masks. Of all those surveyed, 158 (51.6%) presented ‘de novo’ headache. The occurrence of a headache was independently associated with the use of a filter mask, OR 2.14 (95% CI 1.07 to 4.32); being a nurse, OR 2.09 (95% CI 1.18 to 3.72) or another health worker, OR 6.94 (95% CI 3.01 to 16.04); or having a history of asthma, OR 0.29 (95"}