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Table 3 Mean values and proportions of p-values <0.05 for unconditional and conditional outfits and infits

From: Item fit statistics for Rasch analysis: can we trust them?

  

Unconditional

Conditional

n

k

Out

p <0.05

In

p <0.05

Out

p <0.05

In

p <0.05

150

10

0.91

0.014–0.062

0.94

0.018–0.077

1.00

0.033–0.052

1.00

0.000–0.052

 

15

0.95

0.010–0.040

0.96

0.006–0.057

1.00

0.021–0.046

1.00

0.000–0.054

 

20

0.96

0.011–0.049

0.97

0.001–0.057

1.00

0.021–0.053

1.00

0.000–0.052

200

10

0.91

0.020–0.070

0.94

0.022–0.082

1.00

0.028–0.048

1.00

0.000–0.051

 

15

0.94

0.013–0.043

0.96

0.007–0.064

1.00

0.021–0.047

1.00

0.000–0.050

 

20

0.96

0.009-0.053

0.97

0.000-0.057

1.00

0.020–0.055

1.00

0.000–0.060

250

10

0.91

0.023–0.060

0.94

0.047–0.079

1.00

0.023-0.048

1.00

0.000–0.044

 

15

0.95

0.016–0.048

0.96

0.006–0.058

1.00

0.022–0.044

1.00

0.000–0.038

 

20

0.96

0.013–0.055

0.97

0.002–0.066

1.00

0.017–0.053

1.00

0.000–0.055

500

10

0.91

0.058–0.109

0.94

0.110–0.148

1.00

0.026–0.041

1.00

0.000–0.044

 

15

0.95

0.022–0.063

0.96

0.022–0.063

1.00

0.024–0.046

1.00

0.000–0.046

 

20

0.96

0.019–0.062

0.97

0.008–0.067

1.00

0.019–0.052

1.00

0.000–0.056

1000

10

0.91

0.149–0.190

0.94

0.236–0.403

1.00

0.018–0.043

1.00

0.000–0.046

 

15

0.95

0.058–0.080

0.96

0.086–0.115

1.00

0.021–0.054

1.00

0.000–0.047

 

20

0.96

0.029–0.067

0.97

0.034–0.081

1.00

0.020–0.055

1.00

0.000–0.054

1500

10

0.91

0.223–0.293

0.94

0.319–0.672

1.00

0.015–0.053

1.00

0.000–0.060

 

15

0.95

0.093–0.123

0.96

0.128–0.237

1.00

0.013–0.050

1.00

0.000–0.046

 

20

0.96

0.053–0.091

0.97

0.069–0.110

1.00

0.021–0.060

1.00

0.000–0.067

2000

10

0.91

0.319–0.402

0.94

0.442–0.839

1.00

0.020–0.043

1.00

0.000–0.048

 

15

0.95

0.123–0.160

0.96

0.166–0.352

1.00

0.021–0.045

1.00

0.000–0.049

 

20

0.96

0.065–0.104

0.97

0.090–0.139

1.00

0.021–0.058

1.00

0.000–0.060

3000

10

0.91

0.452–0.563

0.94

0.585–0.975

1.00

0.020–0.052

1.00

0.000–0.050

 

15

0.95

0.152–0.254

0.96

0.208–0.621

1.00

0.012–0.048

1.00

0.000–0.049

 

20

0.96

0.090–0.145

0.97

0.110–0.278

1.00

0.018–0.049

1.00

0.000–0.048

10000

10

0.91

0.930–0.980

0.94

0.981–1.000

1.00

0.016–0.045

1.00

0.000–0.045

 

15

0.95

0.490–0.749

0.96

0.629–1.000

1.00

0.017–0.056

1.00

0.000–0.061

 

20

0.96

0.256–0.501

0.97

0.337–0.976

1.00

0.018–0.068

1.00

0.000–0.058