Table 1.

Selection of instruments specifically developed to measure financial toxicity of cancer

Abbreviation of the instrument	Author, year, reference	Country of origin	Original language	Translations	Target population	No. of items
COST	de Souza et al., 201475 de Souza et al., 201742	USA	English	14 available (Chinese—simplified, Chinese—traditional, English, French, German, Greek, Hindi, Indonesian, Italian, Korean, Malay, Marathi, Portuguese, Spanish)	Patients with cancer (various types)	12
PROFFIT	Riva et al., 202176,77	Italy	Italian	English (ongoing linguistic validation and cross-cultural adaptation)	Patients with cancer (various types)	16
SFDQ	Dar et al., 202278	India	Indian	English	Patients undergoing radiotherapy for head and neck cancer	14

COST, COmprehensive Score for financial Toxicity; PROFFIT, Patient-Reported Outcome for Fighting FInancial Toxicity; SFDQ, Subjective Financial Distress Questionnaire.