# OnCo record national-polyp-study (trial). 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/trials/national-polyp-study/>
  a schema:MedicalTrial ;
  onco:kind "trial" ;
  schema:identifier "national-polyp-study" ;
  schema:name "National Polyp Study"@en ;
  schema:alternateName "NPS"@en ;
  schema:description "The study that showed removing a polyp at colonoscopy does not just prevent cancer, it prevents death from it: half as many deaths as expected, fifteen years on."@en ;
  schema:url <https://onco.cc/trials/national-polyp-study/> ;
  schema:dateModified "2026-09-24"^^xsd:date ;
  schema:citation <https://doi.org/10.1056/NEJMoa1100370> ;
  onco:status "positive" ;
  onco:phase "observational" ;
  onco:cancers <https://onco.cc/cancers/colorectal/> ;
  onco:sections <https://onco.cc/fronts/early-detection/>, <https://onco.cc/fronts/prevention/> ;
  onco:technologies <https://onco.cc/technologies/colorectal-screening/>, <https://onco.cc/technologies/endoscopic-resection/> ;
  onco:trials <https://onco.cc/trials/nordicc/>, <https://onco.cc/trials/minnesota-fob/> .