Table 2 Adjustment values for the tested models.

From: Vigor at work mediates the effect of transformational and authentic leadership on engagement

 

Χ2 S-B

df

p

CFI

NFI

NNFI

RMSEA

90% CI of RMSEA

Δ χ2 S-B

Model 1

689.64

77

 < 0.001

0.73

0.71

0.68

0.19

0.18–0.21

–

Model 2

325.08

76

 < 0.001

0.89

0.86

0.87

0.12

0.11–0.14

− 4154.12

Model 3

264.02

74

 < 0.001

0.92

0.89

0.90

0.11

0.10–0.12

63.88***

Model 4

138.85

71

 < 0.001

0.97

0.94

0.96

0.07

0.05–0.08

98.76***

  1. Model 1: A single-factor structure; Model 2: Two-factor structure (leadership styles factor and energy factor); Model 3: Three-factor structure (leadership styles, vigor at work and engagement); Model 4: Four-factor structure (TFL, AL, vigor at work and engagement).
  2. CFI = Comparative fit index; df = Degrees of freedom; CI = Confidence interval; NFI = Normed fit index; NNFI = Non-normed fit index; RMSEA = Root mean square error of approximation; χ2 S-B = Satorra–Bentler chi-square; Δ χ2 S-B = Scaled Satorra–Bentler chi-square difference.
  3. ***p < 0.001.
Back to article page