Validation of an eight-item resilience scale for inpatients with spinal cord injuries in a rehabilitation hospital: exploratory factor analyses and item response theory

Purpose: People with spinal cord injury (PwSCI) can experience life changes, including impacts on their physical and mental health. PwSCI often report less life satisfaction and lower subjective well-being than peers without SCI. These challenges and adversities increase the demand on them to be more resilient. Healthcare providers need quick and valid instruments to assess adult patients’ resilience in clinical settings. We aimed to validate the factor validity and discrimination ability of a resilience scale, CD-RISC-10, for clinical usage in adults with SCI during hospitalization. Materials and Methods: 93 adults with SCI responded to the self-reported survey, including CD-RISC-10, the Patient Health Questionnaire-9 Scale (PHQ-9), the Satisfaction with Life Scale (SWLS), and the Intrinsic Spirituality Scale. We conducted descriptive statistics, exploratory factor analysis (EFA), and item response theory (IRT). Results: Two items were deleted from CD-RISC-10 after EFA, forming CD-RISC-8. The item discriminations of the remaining eight items from the unconstrained IRT model ranged from a high of 3.071 to a relatively low 1.433. CD-RISC-8 is significantly related to PHQ-9 and SWLS. Conclusions: The factor validity of the CD-RISC-8 was improved. Significantly, the CD-RISC-8 has excellent potential for clinical usage due to its discriminant ability between low and intermediate resilience.