The functional assessment of cancer therapy (FACT) scale. Development of a brain subscale and revalidation of the general version (FACT-G) in patients with primary brain tumors

The FACT-G has good psychometric properties supporting its broad generalizability and the brain subscale tests substantially different QOL issues than the core instrument. Use of this scale with the addition of the brain subscale provides a well rounded view of the various aspects of QOL from the patient's perspective. With modifications and further psychometric testing, the brain subscale may have broader applicability to subpopulations of patients with other brain disorders.