“…These data suggest that the underlying health of the patient, and perhaps not PS, is an important factor associated with resource use for all patients included in this study, as the result was consistent among those with colorectal, lung or gastric cancer. Underlying health conditions may play an important role in the relationship between PS and HCRU; a relationship was observed only among those with survival outcomes of less than 1 year in melanoma; unfortunately no data were presented related to comorbid conditions in this study, which may have helped to explain this relationship 17 .…”