National Comprehensive Cancer Network/Functional Assessment of Cancer Therapy-Ovarian Symptom Index-18 Version 2 Questionnaire

**Semantic type:** Intellectual Product

**Definition:** A standardized 18-item rating scale for the assessment of symptom response to treatment for advanced ovarian cancer, including subscales that are specific for disease-related symptoms, treatment-related symptoms, and general function/well-being. Originally developed by Cella, et al. in 1997, it is derived from the ovarian cancer-specific subscale of the Functional Assessment of Cancer Therapy (FACT-O).

**Synonyms:** - FAC050 - NCCN-FACT FOSI-18 V2 - NCCN-FACT FOSI-18 Version 2