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The CarerQol Instrument: A Systematic Review, Validity Analysis, and Generalization Reliability Study.

Elena Cejalvo1, Manuel Martí-Vilar1, Júlia Gisbert-Pérez2

  • 1Department of Basic Psychology, Faculty of Psychology and Speech Therapy, University of Valencia, 46010 Valencia, Spain.

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|March 27, 2025
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The CarerQol instrument effectively measures informal caregiver quality of life and impact. While generally reliable for research, its clinical application requires careful consideration due to moderate reliability coefficients.

Keywords:
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Area of Science:

  • Gerontology
  • Health Services Research
  • Psychometrics

Background:

  • Informal caregivers' quality of life (QoL) is crucial for dependent care.
  • The CarerQol instrument assesses the impact of caregiving on informal caregivers.
  • It comprises the CarerQol-7D (effects of care) and CarerQol-VAS (happiness).

Purpose of the Study:

  • To systematically review and analyze the psychometric properties of the CarerQol instrument.
  • To evaluate the validity (convergent, clinical, discriminative) and reliability of CarerQol.
  • To synthesize findings from studies utilizing the CarerQol instrument since its inception in 2006.

Main Methods:

  • Systematic literature review of 54 articles employing the CarerQol instrument.
  • Meta-analysis of reliability coefficients (Cronbach's alpha, test-retest).
  • Assessment of convergent, clinical, and discriminative validity.

Main Results:

  • CarerQol demonstrated good convergent, clinical, and discriminant validity.
  • Average Cronbach's alpha was 0.67 (95% CI [0.56, 0.75]).
  • Average test-retest reliability was 0.62 (95% CI [0.04, 0.89]), with significant heterogeneity.

Conclusions:

  • CarerQol is considered a reliable instrument for exploratory research in caregiver QoL.
  • Its use in clinical practice for decision-making warrants caution.
  • Further research may be needed to address heterogeneity in reliability estimates.