- COST stands for Comprehensive Score for Financial Toxicity
- Includes questions assessing degree of financial toxicity in patients with advanced cancer diagnoses
- Created by @desouza2014 and validated for US cancer patients; the construct originally formed a single factor (on finances, resources, affects, coping and effects on family)
- Validated by @sharif2020 for Persian cancer patients; the construct changed to three dimensions (financial worry, financial control and direct-indirect costs concerns) and had 11 items:
