Outcome in palliative care can be defined as patients' quality of life, quality of death and satisfaction with care. In an Italian multicentre prospectic study ('Staging') the quality of life of 571 palliative care patients with advanced cancer disease was assessed since the beginning of palliative care till the end of the study. We analyzed the tissue of quality of life missing data and the possibility to input the missing quality of life evaluation through the quality of life evaluation made by a proxy (doctor, nurse). The greatest functional impairment and an increasing level of some symptoms (fatigue, general malaise, emotional status) were observed during the last two weeks of life, whereas for other symptoms (gastro-intestinal, pain) some degree of control was possible. The quality of life analysis for palliative care patients should consider the different response of different quality of life components to the palliative care intervention.