Measuring cancer caregiver health literacy: Validation of the Health Literacy of Caregivers Scale–Cancer (HLCS-C) in an Australian population

Eva Yuen, Tess Knight, Sarity Dodson, Jacqueline Chirgwin, Lucy Busija, Lina A. Ricciardelli, Susan Burney, Phillip Parente, Patricia M. Livingston

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

Caregivers have been largely neglected in health literacy measurement. We assess the construct validity, and internal consistency of the Health Literacy of Caregivers Scale–Cancer (HLCS-C), and present a revised, psychometrically robust scale. Using data from 297 cancer caregivers (12.4% response rate) recruited from Melbourne, Australia between January–July 2014, confirmatory factor analysis (CFA) was conducted to evaluate the HLCS-C's proposed factor structure. Items were evaluated for: item difficulty, unidimensionality and overall item fit within their domain. Item-threshold-ordering was examined though one-parameter Item Response Theory models. Internal consistency was assessed using Raykov's reliability coefficient. CFA results identified 42 poorly performing/redundant items which were subsequently removed. A 10-factor model was fitted to 46 acceptable items with no correlated residuals or factor cross-loadings accepted. Adequate fit was revealed (χ2 WLSMV = 1463.807[df = 944], p <.001, RMSEA = 0.043, CFI = 0.980, TLI = 0.978, WRMR = 1.00). Ten domains were identified: Proactivity and determination to seek information; Adequate information about cancer and cancer management; Supported by healthcare providers (HCP) to understand information; Social support; Cancer-related communication with the care recipient (CR); Understanding CR needs and preferences; Self-care; Understanding the healthcare system; Capacity to process health information; and Active engagement with HCP. Internal consistency was adequate across domains (0.78–0.92). The revised HLCS-C demonstrated good structural, convergent, and discriminant validity, and high internal consistency. The scale may be useful for the development and evaluation of caregiver interventions.

Original languageEnglish
Pages (from-to)330-344
Number of pages15
JournalHealth and Social Care in the Community
Volume26
Issue number3
DOIs
Publication statusPublished - 1 May 2018

Keywords

  • cancer
  • caregivers
  • confirmatory factor analysis
  • health literacy
  • psychometric assessment
  • questionnaire development

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