Table 1. Determination of the psychometric properties of empathy and alexithymia scales
Scale KMO Bartlett’s test AIC range Mean rIS (135) (SD)  [95% CI] Confirmatory analysis Indicators of internal consistency
2/df sRMR GFI AGFI RMSEA CFI GLB ω [95% CI]
f-JSPE 0.79 χ2(190, N = 137) = 598.8, p < 0.001 0.608 - 0.872 0.29 (0.15) [0.22-0.36] 1.32 0.07 0.87 0.84 0.047 0.88 0.87 0.70 [0.67-0.74]
f-TAS20 0.814 χ2(190, N = 137) = 830.9, p < 0.001 0.610 - 0.911 0.42 (0.16) [0.34-0.50] 1.34 0.07 0.87 0.83 0.05 0.92 0.91 0.84 [0.81- 0.88]

AGFI: Adjusted Goodness-of-Fit Index; AIC: anti-image coefficient; CFI: Confirmatory Fit Index; χ2/df: normed χ2; df: degree of freedom; GFI: Goodness-of-Fit Index; GLB: Greatest Lower Bound coefficient; rIS: item-score correlation coefficient; KMO: Kaiser-Meyer-Olkin coefficient; ω: McDonald’s ω coefficient; RMSEA: Root Mean Square Error of Approximation; sRMR: standardized Root Mean Square of Residuals; [95% CI]: 95% confidence interval.

 Int J Med Educ. 2018; 9:122-128; doi: 10.5116/ijme.5ac6.44ba