PMC:7245295 / 2731-2932 JSONTXT

{"project":"LitCovid-PubTator","denotations":[{"id":"61","span":{"begin":95,"end":103},"obj":"Species"},{"id":"62","span":{"begin":162,"end":170},"obj":"Species"},{"id":"68","span":{"begin":191,"end":196},"obj":"Disease"}],"attributes":[{"id":"A61","pred":"tao:has_database_id","subj":"61","obj":"Tax:9606"},{"id":"A62","pred":"tao:has_database_id","subj":"62","obj":"Tax:9606"},{"id":"A68","pred":"tao:has_database_id","subj":"68","obj":"MESH:D003643"}],"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":"Immortal time bias (or survivor treatment selection bias) can occur in survival analyses where patients who live longer are more likely to receive treatment than patients who suffer an early death [4]."}

{"project":"LitCovid-sentences","denotations":[{"id":"T19","span":{"begin":0,"end":201},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Immortal time bias (or survivor treatment selection bias) can occur in survival analyses where patients who live longer are more likely to receive treatment than patients who suffer an early death [4]."}