# OnCo record idea-tr1-crossover-adjusted-survival-standard (idea). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/ideas/idea-tr1-crossover-adjusted-survival-standard/>
  a schema:CreativeWork ;
  onco:kind "idea" ;
  schema:identifier "idea-tr1-crossover-adjusted-survival-standard" ;
  schema:name "Pre-specified crossover-adjusted survival in every trial that allows crossover"@en ;
  schema:description "When control-arm patients switch to the new drug after their cancer grows, the survival comparison gets muddied. Trials should plan in advance how they will correct for this, and report both raw and corrected numbers."@en ;
  schema:url <https://onco.cc/ideas/idea-tr1-crossover-adjusted-survival-standard/> ;
  schema:dateModified "2026-09-08"^^xsd:date ;
  schema:citation <https://doi.org/10.1136/bmj.j4530> ;
  onco:institutions <https://onco.cc/institutions/esmo/> ;
  onco:terms <https://onco.cc/terms/os/>, <https://onco.cc/terms/hazard-ratio/> ;
  onco:bottlenecks <https://onco.cc/bottlenecks/b-trial-design/> ;
  onco:keyPapers <https://onco.cc/key-papers/paper-davis-bmj/> .