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Short-form adaptive measure of financial toxicity from the Economic Strain and Resilience in Cancer (ENRICh) study: Derivation using modern psychometric techniques

Author

Listed:
  • Cai Xu
  • Grace L Smith
  • Ying-Shiuan Chen
  • Cristina M Checka
  • Sharon H Giordano
  • Kelsey Kaiser
  • Lisa M Lowenstein
  • Hilary Ma
  • Tito R Mendoza
  • Susan K Peterson
  • Ya-Chen T Shih
  • Sanjay Shete
  • Chad Tang
  • Robert J Volk
  • Chris Sidey-Gibbons

Abstract

Objectives: This study sought to evaluate advanced psychometric properties of the 15-item Economic Strain and Resilience in Cancer (ENRICh) measure of financial toxicity for cancer patients. Methods: We surveyed 515 cancer patients in the greater Houston metropolitan area using ENRICh from March 2019 to March 2020. We conducted a series of factor analyses alongside parametric and non-parametric item response theory (IRT) assessments using Mokken analysis and the graded response model (GRM). We utilized parameters derived from the GRM to run a simulated computerized adaptive test (CAT) assessment. Results: Among participants, mean age was 58.49 years and 278 (54%) were female. The initial round factor analysis results suggested a one-factor scale structure. Negligible levels of differential item functioning (DIF) were evident between eight items. Three items were removed due to local interdependence (Q3>+0.4). The original 11-point numerical rating scale did not function well, and a new 3-point scoring system was implemented. The final 12-item ENRICh had acceptable fit to the GRM (p

Suggested Citation

  • Cai Xu & Grace L Smith & Ying-Shiuan Chen & Cristina M Checka & Sharon H Giordano & Kelsey Kaiser & Lisa M Lowenstein & Hilary Ma & Tito R Mendoza & Susan K Peterson & Ya-Chen T Shih & Sanjay Shete & , 2022. "Short-form adaptive measure of financial toxicity from the Economic Strain and Resilience in Cancer (ENRICh) study: Derivation using modern psychometric techniques," PLOS ONE, Public Library of Science, vol. 17(8), pages 1-16, August.
    • Handle: RePEc:plo:pone00:0272804
    DOI: 10.1371/journal.pone.0272804
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