The validation of the Italian version of the COmprehensive Score for financial Toxicity (COST)
- 11 January 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Supportive Care in Cancer
- Vol. 28 (9), 4477-4485
- https://doi.org/10.1007/s00520-019-05286-y
Abstract
Purpose Financial toxicity (FT) is the unintended, potential economic harm or damage of oncologic treatments that has become a medical problem with political implications. To assess FT, the COmprehensive Score for financial Toxicity (COST) questionnaire was developed. Since an Italian version is not available yet, we aimed to validate the Italian version of the COST questionnaire in a population of cancer patients during oncologic treatments or follow-up. Methods A sample of Italian native outpatients were asked to fill the Italian version of the COST and five other self-administered questionnaires to assess quality of life, treatment-related symptoms, hope, distress, and unmet needs. Additionally, a subsample of patients was asked to retake the COST after 2–6 weeks. Results A single factor better represents the scale structure. Internal consistency and test–retest reliability were good. Evidence of convergent and discriminant validity was provided and criterion validity was established, showing that financial toxicity predicts the patient’s distress. Finally, known-groups validity was confirmed, testing the differences related to treatment-related expenses, sociodemographic characteristics, stage of the disease, and performance status. Conclusion The current findings suggest the Italian version of the COST is a psychometrically sound scale that potentially offers an added value in assessing FT in patients with cancer.Keywords
This publication has 32 references indexed in Scilit:
- FACTOR 9.2Applied Psychological Measurement, 2013
- Supportive Care in Cancer Unit at the National Cancer Institute of MilanCurrent Opinion in Oncology, 2012
- Association Between Prescription Co-Payment Amount and Compliance With Adjuvant Hormonal Therapy in Women With Early-Stage Breast CancerJournal of Clinical Oncology, 2011
- The Patient Dignity Inventory: A Novel Way of Measuring Dignity-Related Distress in Palliative CareJournal of Pain and Symptom Management, 2008
- Edmonton symptom assessment scale: Italian validation in two palliative care settingsSupportive Care in Cancer, 2005
- Burden of Illness in Cancer Survivors: Findings From a Population-Based National SampleJNCI Journal of the National Cancer Institute, 2004
- Common method biases in behavioral research: A critical review of the literature and recommended remedies.Journal of Applied Psychology, 2003
- The European Organization for Research and treatment of cancer approach to quality of life assessment: guidelines for developing questionnaire modulesQuality of Life Research, 1993
- Abbreviated instrument to measure hope: development and psychometric evaluationJournal of Advanced Nursing, 1992
- A comparison of some methodologies for the factor analysis of non‐normal Likert variables: A note on the size of the modelBritish Journal of Mathematical and Statistical Psychology, 1992