OBJECTIVES: I. Evaluate the scale structure and reliability of the ovarian cancer specific questionnaire module (EORTC QLQ-OV28) designed to be used in conjunction with the standard nonspecific questionnaire (EORTC QLQ-C30) in patients with ovarian epithelial cancer. II. Evaluate the psychometric properties of the revised scales (physical and role functioning; global health status/QL) of the EORTC QLQ-C30 among ovarian cancer patients. III. Evaluate the evidence for the validity of EORTC QLQ-OV28.