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Table 2 Result of confirmatory factor analyses (N = 270)

From: Persian version of the work design questionnaire: measurement of its psychometric characteristics

Model

χ2

Df

Ó¼2/df ratio

RMSEA

IFI

CFI

4-factor

6862

2796

2.45

0.07

0.72

0.72

18-factor

5189

2653

1.96

0.06

0.83

0.82

19-factor

4719

2600

1.82

0.05

0.89

0.87

20-factor

4821

2584

1.87

0.05

0.89

0.87

21-factor

4554

2571

1.77

0.04

0.91

0.91

  1. RMSEA root-mean-square error of approximation, CFI comparative fit index, IFI the incremental fit index, χ2/df ratio the chi-square/degrees of freedom ratio