“…It seems plausible that patients' ratings of their general health and QoL should contribute more to prediction alongside clinical variables than self-rated symptoms or functional status, as the latter to some extent can be assessed by others, although not perfectly. Although clinicians are reasonably able to assess observable symptoms, they are poor at assessing patients' QoL (Fowlie et al, 1989; Regan et al, 1991). However, if HRQoL measures make their greatest contributions to prediction of survival by measuring global health/QoL, a more comprehensive generic measure may add more predictive value than cancer-specific measures that include symptoms, particularly in situations where clinical information is already fairly comprehensive.…”