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Gerard Silvestri a Division of Pulmonary and Critical Care Medicine,
Medical University of South Carolina, Charleston, SC 29425-2220, USA, b Section of Hematology/Oncology, Department of Veterans
Affairs Medical Center, White River Junction, VT 05009, USA, c VA
Outcomes Group (111B), Department of Veterans Affairs Medical Center,
White River Junction, VT 05009, USA
Correspondence to: Dr Silvestri
gerard_silvestri{at}smtpgw.musc.edu
Objective: To determine how patients with lung cancer
value the trade off between the survival benefit of chemotherapy and
its toxicities.
Design: Scripted interviews that included three
hypothetical scenarios. Each scenario described the same patient with metastatic non-small cell lung cancer with an expected survival of 4 months without treatment. Subjects were asked to indicate the minimum
survival benefit required to accept the side effects of chemotherapy in
the first two scenarios (mild toxicity and severe toxicity). In the
third scenario, subjects were asked to choose between chemotherapy and
supportive care when the benefit of chemotherapy was either to prolong
life by 3 months or to palliate symptoms.
Subjects: 81 patients previously treated with
cis-platinum based chemotherapy for advanced non-small cell lung
cancer.
Main outcome measure: Survival threshold for
accepting chemotherapy.
Results: The minimum survival threshold for accepting
the toxicity of chemotherapy varied widely in patients. Several patients would accept chemotherapy for a survival benefit of 1 week,
while others would not choose chemotherapy even for a survival benefit
of 24 months. The median survival threshold for accepting chemotherapy
was 4.5 months for mild toxicity and 9 months for severe toxicity. When
given the choice between supportive care and chemotherapy only 18 (22%) patients chose chemotherapy for a survival benefit of 3 months;
55 (68%) patients chose chemotherapy if it substantially reduced
symptoms without prolonging life.
Conclusions: Patients' willingness to accept
chemotherapy for the treatment of metastatic lung cancer varies widely. Many would not choose chemotherapy for its likely survival benefit of 3 months but would if it improved quality of life. The conflict between
these patients' preferences and the care they previously received has
several explanations, one being that some patients had not received the
treatment they would have chosen had they been fully informed.
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