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Inclusion of Comorbidity
in Cancer Statistics

"In clinical practice, the prognostic influences of age and comorbidity are well recognized, and these influences usually receive careful consideration during the diverse decisions of clinical judgment. In statistical studies, however, the effects of comorbidity are generally ignored."
             Alvan R. Feinstein MD, 1974

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Comorbidity Coding Course

Patients with cancer often have other diseases, illnesses, or conditions in addition to their index cancer. These other conditions are generally referred to as comorbidities. Although not a feature of the cancer itself, comorbidity is an important attribute of the patient. Survival rates are lower for patients with a greater number and severity of comorbid conditions. Comorbidity also has direct impact on the care of patients, selection of initial treatment, and evaluation of treatment effectiveness. When reporting statistical survival data, hospital-based and national cancer registries do not routinely take into account these coexisting medical ailments.

Comorbidity Data Collection Form

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Web-Based Comorbidity Calculator

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The Whole Picture: Coding Comorbidity Video

This 9 minute video presents an overview of coding comorbidity and its significance to cancer statistics. The video is approximately 150 MB in size.

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The Comparison of Comorbidity Collection Methods

Recently, several national cancer organizations decided to include comorbidity information as a required data element for cancer registries. The American College of Surgeons Commission on Cancer (CoC) mandated the collection of comorbidity information, using the ICD-9 system, from the hospital discharge “face sheet” beginning with cases abstracted after January 2003. However, extensive research has demonstrated that a claims-based approach to comorbidity collection is less accurate and complete than a chart-based approach. Since there is no single agreed upon method for collecting comorbidity information and selection of one method has trade-offs with other methods, we feel that it is a critical health policy question to compare the performance of a chart-based approach to a claims-based approach. This NIH-NCI funded project will begin in June of 2006.

More Information About This Research

For further assistance, please contact Dr. Jay F. Piccirillo or Dorina Kallogheri
                                                                    (314) 362-8641    or    (314) 362-7394

WEBINAR PRESENTATION