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Table 2 Comparison of four models for the SOC-13 factor structure

From: Validation of the factor structure and psychometric characteristics of the Arabic adaptation of the sense of coherence SOC-13 scale: a confirmatory factor analysis

Model Chi-squared (df) RMSEA (90% CI) CFI TLI SRMR
One-factor 1110.240 (65) 0.114 (0.108–0.120) 0.944 0.933 0.077
Two-factor 760.126 (64) 0.094 (0.088–0.100) 0.963 0.955 0.067
Three-factor 614.628 (62) 0.085 (0.079–0.091) 0.971 0.963 0.060
Four-factor 537.638 (59) 0.081 (0.075–0.087) 0.975 0.966 0.057
Three-factor* 1000.292 (62) 0.111 (0.105–0.117) 0.950 0.937 0.073
Three-factor [excluding items 1,2, and 3] 267.641 (32) 0.077 (0.069–0.086) 0.985 0.979 0.053
  1. CFI, comparative fit index; TLI, Tucker-Lewis index; RMSEA, root mean square error of approximation; CI, confidence interval; df, degrees of freedom; SRMR, standardized root-mean-square residuals
  2. Three-factor*: The original three-dimensional structure