# OnCo record pack-year (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/pack-year/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "pack-year" ;
  schema:name "Pack-year"@en ;
  schema:alternateName "pack years"@en, "pack-years"@en, "packyear"@en, "cigarette pack-year"@en, "smoking pack-year"@en ;
  schema:description "The unit used to measure how much someone has smoked over a lifetime: one pack-year is twenty cigarettes a day for one year. Twenty a day for thirty years, or forty a day for fifteen, are both thirty pack-years."@en ;
  schema:url <https://onco.cc/terms/pack-year/> ;
  schema:dateModified "2026-09-25"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Pack-year> ;
  schema:citation <https://doi.org/10.1001/jama.2021.1117>, <https://doi.org/10.1056/nejmoa1102873>, <https://doi.org/10.1016/j.canep.2023.102354>, <https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/lung-cancer/risk-factors> ;
  onco:tag "lung" ;
  onco:cancers <https://onco.cc/cancers/lung-cancer/>, <https://onco.cc/cancers/nsclc/>, <https://onco.cc/cancers/sclc/> ;
  onco:technologies <https://onco.cc/technologies/low-dose-ct-screening/>, <https://onco.cc/technologies/nhs-targeted-lung-health-check/> ;
  onco:terms <https://onco.cc/terms/targeted-lung-health-check/>, <https://onco.cc/terms/smoking-cessation/>, <https://onco.cc/terms/never-smoker-lung-cancer/> .