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Open Access Publications from the University of California

Codability of industry and occupation information from cancer registry records: Differences by patient demographics, casefinding source, payor, and cancer type.

  • Author(s): Silver, Sharon R
  • Tsai, Rebecca J
  • Morris, Cyllene R
  • Boiano, James M
  • Ju, Jun
  • Scocozza, Marilyn S
  • Calvert, Geoffrey M
  • et al.

INTRODUCTION:Industry and occupation (I&O) information collected by cancer registries is useful for assessing associations among jobs and malignancies. However, systematic differences in I&O availability can bias findings. METHODS:Codability by patient demographics, payor, identifying (casefinding) source, and cancer site was assessed using I&O text from first primaries diagnosed 2011-2012 and reported to California Cancer Registry. I&O were coded to a U.S. Census code or classified as blank/inadequate/unknown, retired, or not working for pay. RESULTS:Industry was codable for 37% of cases; 50% had "unknown" and 9% "retired" instead of usual industry. Cases initially reported by hospitals, covered by preferred providers, or with known occupational etiology had highest codable industry; cases from private pathology laboratories, with Medicaid, or diagnosed in outpatient settings had least. Occupation results were similar. CONCLUSIONS:Recording usual I&O for retirees and improving linkages for reporting entities without patient access would improve I&O codability and research validity.

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