PMC:7786642 / 31313-31556 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T258","span":{"begin":0,"end":243},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The observed pattern could reflect residual variation from a potential inadequate covariate adjustment (including disease spread), spatial variation of pre-existing conditions, other unknown spatial confounders or a combination from all above."}