Validity of the stage of lung cancer in records of the Maastricht Cancer Registry, the Netherlands

Leo J. Schouten, JA Langendijk, JJ Jager, PA vandenBrandt

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    Information collected in a clinical study on a random sample of 99 patients with inoperable lung cancer, treated with radiotherapy, was compared to the staging information in the Maastricht cancer registry. Validity of sex (0% disagreements), date of birth (0%), histology (1% major disagreements) and treatment (1%) was high, but the validity of stage was lower: 12% major and 23% minor disagreements. The misclassification of stage did not result in a shift in the survival estimates. If cancer registries intend to use stage in comparisons of survival, more validation studies are necessary. (C) 1997 Elsevier Science Ireland Ltd.

    Original languageEnglish
    Pages (from-to)115-122
    Number of pages8
    JournalLung Cancer
    Issue number1
    Publication statusPublished - May-1997


    • cancer registry
    • lung cancer
    • staging
    • validity

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