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nif:beginIndex
  • 0 (xsd:integer)
nif:broaderContext
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  • 183 (xsd:integer)
nif:isString
  • Based on the Charlson index scores three levels of comorbidity were defined: 0 (low), corresponding to patients with no recorded pre-existing comorbidity; 1–2 (medium), and >2 (high).
rdf:type