This study marks the first time the Schedule for the Evaluation of Ind
ividual Quality of Life (SEIQoL) has been used with an oncology popula
tion. The SEIQoL is designed to attain a greater level of individual s
ubjectivity in reports on quality of life than is achieved with standa
rd measures of quality of life. The instrument's feasibility for use i
n oncology was assessed with a sample of 15 patients with early stage
prostate cancer treated with radiotherapy. An overview of its administ
ration, scoring, and depiction of quality of life is provided. The mea
sure also is compared with a standard quality-of-life measure-the Euro
pean Organization for the Research and Treatment of Cancer Quality of
Life Questionnaire (EORTC QLQ-C30). The authors suggest that the most
appropriate use for the SEIQoL is as a clinical assessment tool with r
elatively healthy individual patients, whereas standard, brief measure
s may be more practical for use with large samples of patients or rela
tively unhealthy patients or when predetermined quality-of-life concer
ns are addressed. Relevant clinical and research issues are addressed.