Evaluating claims-based indicators of the intensity of end-of-life cancer care.

OBJECTIVE To evaluate measures that could use existing administrative data to assess the intensity of end-of-life cancer care. METHODS Benchmarking standards and statistical variation were evaluated using Medicare claims of 48,906 patients who died from cancer from 1991 through 1996 in 11 regions of the United States. We assessed accuracy by comparing administrative data to 150 medical records in one hospital and affiliated cancer treatment center. RESULTS Systems not providing overly aggressive care near the end of life would be ones in which less than 10% of patients receive chemotherapy in the last 14 days of life, less than 2% start a new chemotherapy regimen in the last 30 days of life, less than 4% have multiple hospitalizations or emergency room visits or are admitted to the intensive care unit (ICU) in the last month of life, and less than 17% die in an acute care institution. At least 55% of patients would receive hospice services before death from cancer, and less than 8% of those would be admitted to hospice within only 3 days of death. All measures were found to have accuracy ranging from 85 to 97% and 2- to 5-fold adjusted variability between the 5th and 95th percentiles of performance. CONCLUSIONS The usefulness of these measures will depend on whether the concept of intensity of care near death can be further validated as an acceptable and important quality issue among patients, their families, health care providers, and other stakeholders in oncology.