Maximizing quality of life is one of the most important goals of palliative chemotherapy in the treatment of advanced lung cancer. If this simple practical tool can be demonstrated to improve palliative management of these patients, including optimizing duration of chemotherapy and use of palliative and supportive services based on patient QoL response, this will dramatically improve the quality of care provided to advanced lung cancer patients. This study will also provide a springboard for other ways to incorporate computer-generated QoL measurement in treatment decision-making in advanced cancer patients, including in other tumor types such as advanced breast and colorectal cancer.