Validity and Reliability of the Empowered Veteran Index-Short Form (EVI-SF)
Abstract
PURPOSE: Veteran empowerment may include connection, community impact, and personal growth. At least one valid and reliable tool has been developed to measure the aforementioned framework: the empowered veteran index (EVI). However, there is a need for a shorter measure to prevent survey fatigue.
MATERIALS AND METHODS: We recruited military veteran members of a nonprofit (n = 316), The Mission Continues, for participation in this cross-sectional online survey study. Participants completed the 35-item EVI. A short form of the EVI (EVI-SF) was developed through bifactor confirmatory factor analysis (CFA).
RESULTS: The 10-item EVI-SF model demonstrated satisfactory performance (χ2 p = 0.68, SRMR = 0.02, RMSEA = 0.01, CFI = 0.99, TLI = 0.99). All factor loadings in this model were ≥ 0.30, providing evidence for the validity of the interval structure. Internal consistency reliability was good for all three subscales (omegas >0.7).
DISCUSSION: Analysis of the EVI-SF showed that the instrument was valid and reliable. The EVI-SF contains 10 items with seven-point Likert scale response options. Use of the instrument may provide for the opportunity to measure empowerment of military veterans.
CONCLUSION: This study provides preliminary psychometric validation of the EVI-SF.
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