# OnCo record prespecified-vs-post-hoc (term). 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/terms/prespecified-vs-post-hoc/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "prespecified-vs-post-hoc" ;
  schema:name "Pre-specified vs post-hoc analysis"@en ;
  schema:alternateName "pre-specified"@en, "prespecified"@en, "pre-planned"@en, "prespecified analysis"@en, "pre-specified analysis"@en, "post-hoc"@en, "post hoc"@en, "post-hoc analysis"@en, "post-hoc subgroup"@en, "retrospective analysis"@en, "unplanned analysis"@en, "exploratory"@en, "exploratory analysis"@en, "hypothesis-generating"@en, "hypothesis generating"@en, "nominal"@en, "nominal P value"@en, "nominally significant"@en, "data dredging"@en, "p-hacking"@en, "statistical analysis plan"@en, "protocol-specified"@en, "pre-registered"@en, "pre-registration"@en, "preregistered"@en, "registered report"@en, "registered reports"@en, "statistical analysis plans"@en ;
  schema:description "Whether an analysis was planned and written down before the data were seen (pre-specified) or invented afterwards (post-hoc). Post-hoc findings, especially in subgroups, are prone to be chance and count as hypotheses for a new trial, not as evidence."@en ;
  schema:url <https://onco.cc/terms/prespecified-vs-post-hoc/> ;
  schema:dateModified "2026-09-09"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Preregistration_(science)> ;
  schema:citation <https://en.wikipedia.org/wiki/Preregistration_(science)> ;
  onco:related <https://onco.cc/terms/subgroup-analysis/>, <https://onco.cc/terms/statistical-significance/>, <https://onco.cc/terms/primary-endpoint/>, <https://onco.cc/terms/intention-to-treat/>, <https://onco.cc/terms/trial-registration/>, <https://onco.cc/terms/trial-protocol/>, <https://onco.cc/terms/trial-failure-modes/>, <https://onco.cc/terms/biomarker-stratified-design/> ;
  onco:sections <https://onco.cc/fronts/drug-discovery/> ;
  onco:trials <https://onco.cc/trials/magnitude/>, <https://onco.cc/trials/progesterone-preop-tmh/>, <https://onco.cc/trials/mindact/> .