Patients and staff perceptions of cancer patients' quality of life.

Abstract Background Discrepancies exist in estimation of quality of life (QL) by patients and caregivers but underlying factors are incompletely characterised. Methods QL of 153 patients was estimated by themselves, by 70 nurses and by 53 physicians in a cross-sectional study. Variables which could influence inter-rater agreement were evaluated. Results Inter-rater agreement of QL was fair ( r  = .292) between patients and nurses and between patients and physicians ( r  = .154). Inter-rater agreement with nurses was significantly lower concerning fatigue and pain for patients with a Karnofsky Index  50. Their inter-rater agreement with physicians was significantly lower for fatigue, pain and physical functioning. Agreement on the degree of anxiety was significantly ( p  = .009) better for female patients. Agreement on the need for social assistance ( p  = .01) and physical functioning ( p  = .03) was significantly better for male patients. Agreement with patients on their physical functioning was significantly ( p  = .03) better for male nurses and male physicians ( r  = .944) than for female nurses and female physicians ( r  = .674). Conclusions Our study showed that estimation of overall QL of patients by professional caregivers is inaccurate. Inter-rater agreement was influenced by KI of patients, by gender of patients and caregivers and by professional experience of nurses.