Psychometric properties of the Persian version of the Second Victim Experience and Support Instrument.

The results of exploratory factor analysis showed that the P-SVEST had four factors. These four factors accounted for 51.67% of the total variance. Also, these factors were confirmed by confirmatory factor analysis (root mean square error of approximation = (90%. confidence interval) = 0.058 [0.045, 0.071], goodness-of-fit index = 0.932, comparative fit index = 0.956, non-normal fit index = 0.918, incremental fit index = 0.957 and Tucker-Lewis index = 0.944). Coefficients of Cronbach's alpha, McDonald's omega, composite reliability and maximum reliability for all of the factors were >0.7, demonstrating satisfied internal consistency.