Model

Goodness-of-Fit Index

Value before

removing (IERs)

Value after removing (IERs)

CFA Model-Data Fit Difference

ranges values of Fit Index

Threshold/ fitting value

Model 1

(6 extra negative items)

Chi-square = \cmin

χ²/DF

2.706

2.529

0.177

0 to 5

<5

Absolute Fit indexes

RMSEA

0.083

0.081

0.002

0.05 > RMSEA > 0.08

<0.05

GFI

0.754

0.751

−0.003

0 > GFI > 1

>0.90

Incremental Fit Indexes

NFI

0.757

0.758

0.001

0 > NFI > 1

>0.90

CFI

0.830

0.836

0.006

0 > CFI > 1

>0.90

IFI

0.832

0.838

0.006

0 > IFI > 1

>0.90

Model 2

(4 extra negative items)

Chi-square = \cmin

χ²/DF

3.530

3.478

0.052

0 to 5

<5

Absolute Fit indexes

RMSEA

0.101

0.104

−0.003

0.05 > RMSEA > 0.08

<0.05

GFI

0.744

0.735

−0.009

0 > GFI > 1

>0.90

Incremental Fit Indexes

NFI

0.646

0.635

−0.011

0 > NFI > 1

>0.90

CFI

0.715

0.706

−0.009

0 > CFI > 1

> 0.90

IFI

0.718

0.710

−0.008

0 > IFI > 1

>0.90

Model 3

(2 extra negative items)

Chi-square = \cmin

χ2/DF

1.981

2.266

−0.285

0 to 5

<5

Absolute Fit indexes

RMSEA

0.090

0.078

0.012

0.05 > RMSEA > 0.08

<0.05

GFI

0.692

0.763

0.071

0 > GFI > 1

>0.90

Incremental Fit Indexes

NFI

0.582

0.645

0.063

0 > NFI > 1

>0.90

CFI

0.730

0.760

0.030

0 > CFI > 1

>0.90

IFI

0.738

0.765

0.027

0 > IFI > 1

>0.90