A psychometric evaluation of the Functional assessment of cancer therapy-kidney symptom index (FKSI-19) among renal cell carcinoma patients suggesting an alternative two-factor structure.
To psychometrically evaluate the hypothesized four-factor structure of the 19-item Functional Assessment of Cancer Therapy-Kidney Symptom Index (FKSI-19) health-related quality of life (HRQoL) instrument in a sample of surgically treated renal cell carcinoma (RCC) patients and examine if an alternative factor structure with good psychometric properties may be derived from the available items.
