Lung transplantation is one treatment option for people with end-stage lung disease. The majority of people undergoing a lung transplant have COPD, and while transplantation can potentially improve survival and quality of life, it may also carry substantial risks, including surgical complications, infections, and pneumonia. The impact of lung transplantation on survival and quality of life has not been extensively studied. In the United States, the United Network for Organ Sharing (UNOS) is the organization that allocates donor lungs to lung recipients. Before 2005, the length of time that a candidate had been on the transplant waiting list was the major determining factor for receiving a donor lung. In mid 2005, the UNOS system changed and began prioritizing candidates on the basis of risk of death prior to lung transplantation and the probability of death within the first year after transplantation. The purpose of this study is to evaluate quality of life factors for lung transplant patients with COPD, both before and after the lung transplant procedure. In addition, quality of life of patients in the new UNOS allocation system will be compared with that of patients in the old UNOS allocation system.